Fix reqcontext ref in signals doc.

docs/signals.rst

@@ -162,11 +162,11 @@ function, you can pass ``current_app._get_current_object()`` as sender.
 Signals and Flask's Request Context
 -----------------------------------
 
-Signals fully support :ref:`reqcontext` when receiving signals.  Context-local
+Signals fully support :ref:`request-context` when receiving signals.
-variables are consistently available between :data:`~flask.request_started` and
+Context-local variables are consistently available between
-:data:`~flask.request_finished`, so you can rely on :class:`flask.g` and others
+:data:`~flask.request_started` and :data:`~flask.request_finished`, so you can
-as needed.  Note the limitations described in :ref:`signals-sending` and the
+rely on :class:`flask.g` and others as needed.  Note the limitations described
-:data:`~flask.request_tearing_down` signal.
+in :ref:`signals-sending` and the :data:`~flask.request_tearing_down` signal.
 
 
 Decorator Based Signal Subscriptions