[Doc]: fix bug in release notes for matplotlib v3.5.0 and v3.7.0

[ztw33]

Documentation Link

https://matplotlib.org/stable/api/prev_api_changes/api_changes_3.5.0.html#miscellaneous-deprecations

Problem

There is a typo in the release notes for matplotlib v3.5.0 and v3.7.0.

The item in this link:

FancyArrowPatch.get_path_in_displaycoord and ConnectionPath.get_path_in_displaycoord are deprecated. ...

ConnectionPath should be ConnectionPatch. There is no such a class as ConnectionPath.

Suggested improvement

Modify ConnectionPath to ConnectionPatch.