Documentation: rename "Apache 2 Reverse Proxy"

This will allow users of different web servers to contribute
instructions for non-Apache web daemons.

Change-Id: I94763a428c109c0106e7bef40da1179fa7284165
Signed-off-by: Francois Marier <francois@debian.org>

Documentation/config-reverseproxy.txt

@@ -1,5 +1,5 @@
-Gerrit Code Review - Apache 2 Reverse Proxy
-===========================================
+Gerrit Code Review - Reverse Proxy
+==================================
 
 Description
 -----------

Documentation/index.txt

@@ -30,7 +30,7 @@ Configuration
 * link:config-gitweb.html[Gitweb Integration]
 * link:config-headerfooter.html[Site Header/Footer]
 * link:config-sso.html[Single Sign-On Systems]
-* link:config-apache2.html[Apache 2 Reverse Proxy]
+* link:config-reverseproxy.html[Reverse Proxy]
 * link:config-hooks.html[Hooks]
 * link:config-mail.html[Mail Templates]
 

Documentation/install.txt

@@ -158,7 +158,7 @@ Site Customization
 Gerrit Code Review supports some site-specific customization options.
 For more information, see the related topic in this manual:
 
-* link:config-apache2.html[Apache 2 Reverse Proxy]
+* link:config-reverseproxy.html[Reverse Proxy]
 * link:config-sso.html[Single Sign-On Systems]
 * link:config-replication.html[Git Replication/Mirroring]
 * link:config-headerfooter.html[Site Header/Footer]