Documentation: hid-alps: Fix packet format section headings

In "Packet Format" section, only "StickPointer data byte" subsection
heading is shown as such in htmldocs output; "Touchpad data byte" one
is in normal paragraph on the other hand.

Properly format the headings to be consistent.

Fixes: 2562756dde55 ("HID: add Alps I2C HID Touchpad-Stick support")
Signed-off-by: Bagas Sanjaya <[e-mail]>
Reviewed-by: Randy Dunlap <[e-mail]>
Tested-by: Randy Dunlap <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

Documentation/hid/hid-alps.rst

···
 
 
 Packet Format
+-------------
+
 Touchpad data byte
-------------------
+~~~~~~~~~~~~~~~~~~
 
 
 ======= ======= ======= ======= ======= ======= ======= ======= =====
···
 
 
 StickPointer data byte
-----------------------
+~~~~~~~~~~~~~~~~~~~~~~
 
 ======= ======= ======= ======= ======= ======= ======= ======= =====
 -	b7	b6	b5	b4	b3	b2	b1	b0