docs: dt: Fix a few grammar nits in the binding/schema docs

Add missing hyphens and reword one sentence for clarity.

Signed-off-by: Simon Glass <[e-mail]>
Reviewed-by: Randy Dunlap <[e-mail]>
Link: https://lore.kernel.org/r/20211003124936.1.Idc7beddc77250bca0cfb5912b56be719d9073bc4@changeid
Signed-off-by: Rob Herring <[e-mail]>

Documentation/devicetree/bindings/example-schema.yaml

···
     # valid for this binding.
 
   clock-frequency:
-    # The type is set in the core schema. Per device schema only need to set
+    # The type is set in the core schema. Per-device schema only need to set
     # constraints on the possible values.
     minimum: 100
     maximum: 400000
···
   # *-supply is always a single phandle, so nothing more to define.
   foo-supply: true
 
-  # Vendor specific properties
+  # Vendor-specific properties
   #
-  # Vendor specific properties have slightly different schema requirements than
+  # Vendor-specific properties have slightly different schema requirements than
   # common properties. They must have at least a type definition and
   # 'description'.
   vendor,int-property:
-    description: Vendor specific properties must have a description
+    description: Vendor-specific properties must have a description
     $ref: /schemas/types.yaml#/definitions/uint32
     enum: [2, 4, 6, 8, 10]
 
   vendor,bool-property:
-    description: Vendor specific properties must have a description. Boolean
+    description: Vendor-specific properties must have a description. Boolean
       properties are one case where the json-schema 'type' keyword can be used
       directly.
     type: boolean
 
   vendor,string-array-property:
-    description: Vendor specific properties should reference a type in the
+    description: Vendor-specific properties should reference a type in the
       core schema.
     $ref: /schemas/types.yaml#/definitions/string-array
     items:
···
       - enum: [baz, boo]
 
   vendor,property-in-standard-units-microvolt:
-    description: Vendor specific properties having a standard unit suffix
+    description: Vendor-specific properties having a standard unit suffix
       don't need a type.
     enum: [ 100, 200, 300 ]
 

Documentation/devicetree/bindings/writing-bindings.rst

···
   of prior implementations. DO add new compatibles in case there are new
   features or bugs.
 
-- DO use a vendor prefix on device specific property names. Consider if
+- DO use a vendor prefix on device-specific property names. Consider if
   properties could be common among devices of the same class. Check other
   existing bindings for similar devices.
 

Documentation/devicetree/bindings/writing-schema.rst

···
 ==========================================
 
 Devicetree bindings are written using json-schema vocabulary. Schema files are
-written in a JSON compatible subset of YAML. YAML is used instead of JSON as it
+written in a JSON-compatible subset of YAML. YAML is used instead of JSON as it
 is considered more human readable and has some advantages such as allowing
 comments (Prefixed with '#').
 
···
   URI typically containing the binding's filename and path. For DT schema, it must
   begin with "http://devicetree.org/schemas/". The URL is used in constructing
   references to other files specified in schema "$ref" properties. A $ref value
-  with a leading '/' will have the hostname prepended. A $ref value a relative
-  path or filename only will be prepended with the hostname and path components
-  of the current schema file's '$id' value. A URL is used even for local files,
-  but there may not actually be files present at those locations.
+  with a leading '/' will have the hostname prepended. A $ref value with only a
+  relative path or filename will be prepended with the hostname and path
+  components of the current schema file's '$id' value. A URL is used even for
+  local files, but there may not actually be files present at those locations.
 
 $schema
   Indicates the meta-schema the schema file adheres to.
 
 title
-  A one line description on the contents of the binding schema.
+  A one-line description on the contents of the binding schema.
 
 maintainers
   A DT specific property. Contains a list of email address(es)
···
 
 select
   Optional. A json-schema used to match nodes for applying the
-  schema. By default without 'select', nodes are matched against their possible
-  compatible string values or node name. Most bindings should not need select.
+  schema. By default, without 'select', nodes are matched against their possible
+  compatible-string values or node name. Most bindings should not need select.
 
 allOf
   Optional. A list of other schemas to include. This is used to
···
 properties
   A set of sub-schema defining all the DT properties for the
   binding. The exact schema syntax depends on whether properties are known,
-  common properties (e.g. 'interrupts') or are binding/vendor specific properties.
+  common properties (e.g. 'interrupts') or are binding/vendor-specific
+  properties.
 
 A property can also define a child DT node with child properties defined
 under it.
···
 
 The 'properties' section of the schema contains all the DT properties for a
 binding. Each property contains a set of constraints using json-schema
-vocabulary for that property. The properties schemas are what is used for
+vocabulary for that property. The properties schemas are what are used for
 validation of DT files.
 
-For common properties, only additional constraints not covered by the common
+For common properties, only additional constraints not covered by the common,
 binding schema need to be defined such as how many values are valid or what
 possible values are valid.
 
-Vendor specific properties will typically need more detailed schema. With the
+Vendor-specific properties will typically need more detailed schema. With the
 exception of boolean properties, they should have a reference to a type in
 schemas/types.yaml. A "description" property is always required.
 
-The Devicetree schemas don't exactly match the YAML encoded DT data produced by
+The Devicetree schemas don't exactly match the YAML-encoded DT data produced by
 dtc. They are simplified to make them more compact and avoid a bunch of
 boilerplate. The tools process the schema files to produce the final schema for
 validation. There are currently 2 transformations the tools perform.
 
-The default for arrays in json-schema is they are variable sized and allow more
+The default for arrays in json-schema is they are variable-sized and allow more
 entries than explicitly defined. This can be restricted by defining 'minItems',
 'maxItems', and 'additionalItems'. However, for DeviceTree Schemas, a fixed
 size is desired in most cases, so these properties are added based on the