DOC: Miscellaneous UI and editorial updates (#7324)

### What problem does this PR solve?



### Type of change


- [x] Documentation Update

api/apps/kb_app.py

@@ -99,7 +99,7 @@ def update():
         if req.get("parser_id", "") == "tag" and os.environ.get('DOC_ENGINE', "elasticsearch") == "infinity":
             return get_json_result(
                 data=False,
-                message='The chunk method Tag has not been supported by Infinity yet.',
+                message='The chunking method Tag has not been supported by Infinity yet.',
                 code=settings.RetCode.OPERATING_ERROR
             )