Docs are now in user guide and main (#19977)

* Fix links to docs in source to point to docs on main not master

* More docs and scripts that need to point to main

Tools/px4moduledoc/srcparser.py

@@ -12,7 +12,7 @@ class ModuleDocumentation(object):
     """
 
     # If you add categories or subcategories, they also need to be added to the
-    # TOC in https://github.com/PX4/Devguide/blob/master/en/SUMMARY.md
+    # TOC in https://github.com/PX4/PX4-user_guide/blob/main/en/SUMMARY.md
     valid_categories = ['driver', 'estimator', 'controller', 'system',
                         'communication', 'command', 'template', 'simulation', 'autotune']
     valid_subcategories = ['', 'distance_sensor', 'imu', 'airspeed_sensor',