Documentation: HID: hid-alps editing & corrections

Do basic editing & correction to hid-alps.rst:
- fix grammar
- fix punctuation spacing

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Jiri Kosina <[e-mail]>
Cc: Benjamin Tissoires <[e-mail]>
Cc: [e-mail]
Cc: Jonathan Corbet <[e-mail]>
Cc: Jonathan Cameron <[e-mail]>
Cc: [e-mail]
Reviewed-by: Jonathan Cameron <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

Documentation/hid/hid-alps.rst

···
 
 Command Read/Write
 ------------------
-To read/write to RAM, need to send a commands to the device.
+To read/write to RAM, need to send a command to the device.
 
 The command format is as below.
 
···
 Byte7	Checksum
 =====	======================
 
-Command Byte is read=0xD1/write=0xD2 .
+Command Byte is read=0xD1/write=0xD2.
 
 Address is read/write RAM address.