Doc: style fix (#11295)

### What problem does this PR solve?

Style fix based on  #11283
### Type of change

- [x] Documentation Update

deepdoc/parser/mineru_parser.py

@@ -434,7 +434,7 @@ class MinerUParser(RAGFlowPdfParser):
                     if not section.strip():
                         section = "FAILED TO PARSE TABLE"
                 case MinerUContentType.IMAGE:
-                    section = "".join(output.get(["image_caption"],[])) + "\n" + "".join(output.get(["image_footnote"],[]))
+                    section = "".join(output.get("image_caption", [])) + "\n" + "".join(output.get("image_footnote", []))
                 case MinerUContentType.EQUATION:
                     section = output["text"]
                 case MinerUContentType.CODE:

docs/guides/accessing_admin_ui.md

@@ -15,7 +15,7 @@ To access the RAGFlow admin UI, append `/admin` to the web UI's address, e.g. `h
 ### Default Credentials
 | Username | Password |
 |----------|----------|
-| admin@ragflow.io   | admin |
+| `admin@ragflow.io`   | `admin` |
 
 ## Admin UI Overview