add release-diff option to workflows docs

odk/odk.py

@@ -562,7 +562,7 @@ class OntologyProject(JsonSchemaMixin):
     """continuous integration defaults; currently available: travis, github_actions, gitlab-ci"""
 
     workflows : Optional[List[str]] = field(default_factory=lambda: ['docs'])
-    """Workflows that are synced when updating the repo. Currently available: docs, diff, qc."""
+    """Workflows that are synced when updating the repo. Currently available: docs, diff, qc, release-diff."""
 
     import_pattern_ontology : bool = False
     """if true import pattern.owl"""