Fix flake8 lint error

Author: FeldrinH

lib/matplotlib/pyplot.py

@@ -556,7 +556,8 @@ def isinteractive() -> bool:
     return matplotlib.is_interactive()
 
 
-# Note: The return type of ioff being AbstractContextManager instead of ExitStack is deliberate.
+# Note: The return type of ioff being AbstractContextManager 
+# instead of ExitStack is deliberate.
 # See https://github.com/matplotlib/matplotlib/issues/27659 
 # and https://github.com/matplotlib/matplotlib/pull/27667 for more info.
 def ioff() -> AbstractContextManager:
@@ -599,7 +600,8 @@ def ioff() -> AbstractContextManager:
     return stack
 
 
-# Note: The return type of ion being AbstractContextManager instead of ExitStack is deliberate.
+# Note: The return type of ion being AbstractContextManager 
+# instead of ExitStack is deliberate.
 # See https://github.com/matplotlib/matplotlib/issues/27659 
 # and https://github.com/matplotlib/matplotlib/pull/27667 for more info.
 def ion() -> AbstractContextManager: