doc: Make all module docs self-contained

modules/gridmap/config.py

@@ -1,14 +1,13 @@
-
-
 def can_build(platform):
     return True
 
-
 def configure(env):
     pass
 
 def get_doc_classes():
-	return ["GridMap"]
+    return [
+        "GridMap",
+    ]
 
 def get_doc_path():
-	return "doc_classes"
+    return "doc_classes"