Fix failing tf nightly py api build.

PiperOrigin-RevId: 533481250

Author: MarkDaoust

tools/tensorflow_docs/api_generator/parser.py

@@ -109,6 +109,10 @@ def _get_raw_docstring(py_object):
   if result is None:
     result = ''
 
+  lines = result.splitlines()
+  if lines and 'GENERATED' in lines[0]:
+    result = ''
+
   result = _StripTODOs()(result)
   result = _StripPylintAndPyformat()(result)
   result = _AddDoctestFences()(result + '\n')
@@ -730,7 +734,7 @@ def get_defined_in(
     end_line = None
   else:
     end_line = start_line + len(lines) - 1
-    if 'MACHINE GENERATED' in lines[0]:
+    if 'GENERATED' in lines[0]:
       # don't link to files generated by tf_export
       return None