Fix wrong link address in link 'submit it for review'

Change from localhost to proper link address for /policies/upstreaming
referenced from apparmor.md

Signed-off-by: Andreas Elvstam Cantner <andreas.elvstam@se.bosch.com>

content/guides/apparmor.md

@@ -101,7 +101,7 @@ is as big as it needs to be.
 
 Once the profile is working as required add it to the relevant package
 (typically in the `debian/apparmor.d` directory) and
-[submit it for review](http://localhost:1313/policies/upstreaming/),
+[submit it for review]({{< ref "upstreaming.md" >}}),
 
 
 # External links