Merge pull request #4304 from JustinCarmony/docs-watch-in-plug

Adding a reference to watch_in on the highstate reference

doc/ref/states/highstate.rst

@@ -111,6 +111,14 @@ declaration that will restart Apache whenever the Apache configuration file,
       file:
         - managed
 
+    .. seealso:: watch_in and require_in
+
+        Sometimes it is more convenient to use the :term:`watch_in` or 
+        :term:`require_in` syntax instead of extending another ``SLS``
+        file.
+
+        :doc:`State Requisites </ref/states/requisites>`
+
 State declaration
 -----------------