Cleanup: consistent use of tags: NOTE/TODO/FIXME/XXX

Also use doxy style function reference `#` prefix chars when
referencing identifiers.

source/blender/python/intern/bpy_interface_atexit.c

@@ -46,9 +46,8 @@ static PyObject *func_bpy_atregister = NULL; /* borrowed reference, `atexit` hol
 
 static void atexit_func_call(const char *func_name, PyObject *atexit_func_arg)
 {
-  /* note - no error checking, if any of these fail we'll get a crash
-   * this is intended, but if its problematic it could be changed
-   * - campbell */
+  /* NOTE(campbell): no error checking, if any of these fail we'll get a crash
+   * this is intended, but if its problematic it could be changed. */
 
   PyObject *atexit_mod = PyImport_ImportModuleLevel("atexit", NULL, NULL, NULL, 0);
   PyObject *atexit_func = PyObject_GetAttrString(atexit_mod, func_name);