Change "Edit" to "Update" in docstring

Alejandro G&oacute;mez · Alejandro G&oacute;mez · commit e2e9c95ad5fb · 2012-05-27T19:54:29.000+02:00
diff --git a/pygithub3/services/issues/__init__.py b/pygithub3/services/issues/__init__.py
@@ -70,7 +70,7 @@ def create(self, user, repo, data):
         return self._post(request)
 
     def update(self, user, repo, number, data):
-        """ Edit an issue
+        """ Update an issue
 
         :param str user: Username
         :param str repo: Repo name
