Update Apache documentation in manual

docs/en/020_Getting_Started/020_Download_and_Installation/010_On_Arch_Linux.md

@@ -26,7 +26,16 @@ The PHP extensions listed in [the requirements](/en/Getting_Started/index) not m
 
 # Web server configuration
 
-Sample configuration for both Nginx and Apache HTTPd can be found in `/etc/webapps/arsse/nginx/` and `/etc/webapps/arsse/apache/`, respectively. The `example.conf` files are basic virtual host examples; the other files they include should normally be usable without modification, but may be modified if desired.
+Sample configuration for both Nginx and Apache HTTP Server can be found in `/etc/webapps/arsse/nginx/` and `/etc/webapps/arsse/apache/`, respectively. The `example.conf` files are basic virtual host examples; the other files they include should normally be usable without modification, but may be modified if desired.
+
+If using Apache HTTP Server the `mod_proxy` and `mod_proxy_fcgi` modules must be enabled. This can be achieved by adding the following lines to your virtual host or global configuration:
+
+```apache
+LoadModule proxy_module modules/mod_proxy.so
+LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so
+```
+
+No additional set-up is required for Nginx.
 
 # Next steps
 

docs/en/020_Getting_Started/020_Download_and_Installation/020_On_Debian_and_Ubuntu.md

@@ -51,9 +51,9 @@ sudo systemctl restart arsse
 
 # Web server configuration
 
-Sample configuration for both Nginx and Apache HTTPd can be found in `/etc/arsse/nginx/` and `/etc/arsse/apache/`, respectively. The `example.conf` files are basic virtual host examples; the other files they include should normally be usable without modification, but may be modified if desired.
+Sample configuration for both Nginx and Apache HTTP Server can be found in `/etc/arsse/nginx/` and `/etc/arsse/apache/`, respectively. The `example.conf` files are basic virtual host examples; the other files they include should normally be usable without modification, but may be modified if desired.
 
-In order to use Apache HTTPd the FastCGI proxy module must be enabled and the server restarted:
+In order to use Apache HTTP Server the FastCGI proxy module must be enabled and the server restarted:
 
 ```sh
 sudo a2enmod proxy proxy_fcgi

docs/en/020_Getting_Started/index.md

@@ -1,4 +1,4 @@
-Presently installing and setting up The Arsse involves some manual labour. We have packages for Arch Linux and hope to have installation packages available for other operating systems eventually, but for now the pages in this section should help get you up and running on Arch Linux or Debian-based systems, with Nginx or Apache HTTPd.
+Presently installing and setting up The Arsse involves some manual labour. We have packages for Arch Linux and hope to have installation packages available for other operating systems eventually, but for now the pages in this section should help get you up and running on Arch Linux or Debian-based systems, with Nginx or Apache HTTP Server.
 
 It is also be possible to run The Arsse on other operating systems (including Windows) and with other Web servers, but the configuration required to do so is not documented in this manual.