Upgrade styler to better handle lists (#9423)

* Add missing lines before a new list.

* Update doc styler and restyle some files.

* Fix docstrings of LED and Longformer

src/transformers/testing_utils.py

@@ -522,6 +522,7 @@ class CaptureLogger:
     Context manager to capture `logging` streams
 
     Args:
+
     - logger: 'logging` logger object
 
     Results:
@@ -851,9 +852,10 @@ def pytest_terminal_summary_main(tr, id):
     there.
 
     Args:
+
     - tr: `terminalreporter` passed from `conftest.py`
-    - id: unique id like `tests` or `examples` that will be incorporated into the final reports
-      filenames - this is needed as some jobs have multiple runs of pytest, so we can't have them overwrite each other.
+    - id: unique id like `tests` or `examples` that will be incorporated into the final reports filenames - this is
+      needed as some jobs have multiple runs of pytest, so we can't have them overwrite each other.
 
     NB: this functions taps into a private _pytest API and while unlikely, it could break should
     pytest do internal changes - also it calls default internal methods of terminalreporter which