Common/Dev: rename README Battery Monitor heading to Battery Monitoring

Matches the heading already used across existing board README pages in
the wiki, which the template and dev guide had drifted from.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: Hwurzburg

dev/source/docs/readme_file.rst

@@ -22,7 +22,7 @@ Every autopilot board port should include a Readme.md file explaining the board'
 - WIFI module (if applicable)
 - :ref:`GPIOs <readme-intro>`
 - :ref:`RSSI/Airspeed/Analog Pins <readme-rssi>`
-- :ref:`Battery Monitor <readme-batt>`
+- :ref:`Battery Monitoring <readme-batt>`
 - :ref:`Compass <readme-compass>`
 - :ref:`Firmware <readme-firmware>`
 - :ref:`Loading Firmware <readme-loading>`
@@ -143,8 +143,8 @@ If an analog RSSI, general purpose analog inputs, or Airspeed pin is defined, gi
 
 .. _readme-batt:
 
-Battery Monitor
-===============
+Battery Monitoring
+==================
 If a battery monitor is defined in the hwdef, its default parameter and voltage range info should be provided. If DroneCAN or SMBus type, info about its setup.
 
 Example:

misc/readme_template.md

@@ -161,7 +161,7 @@ If the ARSPD pin is used for analog airspeed  input. Set ARSPD_PIN to 92. Set AR
 |MAIN(8)       | 108        |
 
 
-## Battery Monitor
+## Battery Monitoring
 
 The board has a internal voltage sensor and connections on the ESC connector for an external current sensor input.
 The voltage sensor can handle up to 6S LiPo batteries.