Merge pull request pallets#3395 from decaz/patch-1

Update reqcontext.rst

Author: davidism

docs/reqcontext.rst

@@ -109,7 +109,7 @@ redirects or chain different applications together.
 After the request is dispatched and a response is generated and sent,
 the request context is popped, which then pops the application context.
 Immediately before they are popped, the :meth:`~Flask.teardown_request`
-and :meth:`~Flask.teardown_appcontext` functions are are executed. These
+and :meth:`~Flask.teardown_appcontext` functions are executed. These
 execute even if an unhandled exception occurred during dispatch.