Rename reverseContour to _reverse. (#801)

* Rename `reverseContour` to `_reverse`.

---------

Co-authored-by: knutnergaard <knutnergaard@users.noreply.github.com>

Author: knutnergaard

Lib/fontParts/base/contour.py

@@ -661,7 +661,7 @@ def reverse(self) -> None:
             True
 
         """
-        self._reverseContour()
+        self._reverse()
 
     def _reverse(self, **kwargs) -> None:
         r"""Reverse the direction of the contour.

Lib/fontParts/fontshell/contour.py

@@ -67,7 +67,7 @@ def _get_area(self):
     def _get_clockwise(self):
         return self.naked().clockwise
 
-    def _reverseContour(self, **kwargs):
+    def _reverse(self, **kwargs):
         self.naked().reverse()
 
     # ------------------------