common.xml: correct URL we use for board_types.txt

message_definitions/v1.0/common.xml

@@ -5238,7 +5238,7 @@
       <field type="uint32_t" name="flight_sw_version">Firmware version number</field>
       <field type="uint32_t" name="middleware_sw_version">Middleware version number</field>
       <field type="uint32_t" name="os_sw_version">Operating system version number</field>
-      <field type="uint32_t" name="board_version">HW / board version (last 8 bits should be silicon ID, if any). The first 16 bits of this field specify https://github.com/PX4/PX4-Bootloader/blob/master/board_types.txt</field>
+      <field type="uint32_t" name="board_version">HW / board version (last 8 bits should be silicon ID, if any). The first 16 bits of this field specify https://github.com/ardupilot/ardupilot/blob/master/Tools/AP_Bootloader/board_types.txt</field>
       <field type="uint8_t[8]" name="flight_custom_version">Custom version field, commonly the first 8 bytes of the git hash. This is not an unique identifier, but should allow to identify the commit using the main version number even for very large code bases.</field>
       <field type="uint8_t[8]" name="middleware_custom_version">Custom version field, commonly the first 8 bytes of the git hash. This is not an unique identifier, but should allow to identify the commit using the main version number even for very large code bases.</field>
       <field type="uint8_t[8]" name="os_custom_version">Custom version field, commonly the first 8 bytes of the git hash. This is not an unique identifier, but should allow to identify the commit using the main version number even for very large code bases.</field>