Update README.md

Author: damalis

README.md

@@ -79,7 +79,7 @@ Open a terminal and `cd` to the folder in which `docker-compose.yml` is saved an
 cd full-stack-proxy-nginx-joomla-for-everyone-with-docker-compose
 ```
 
-### Manual Configuration
+### Manual
 
 Copy the example environment into `.env`
 
@@ -103,7 +103,7 @@ change example.com to your domain name in ```./phpmyadmin/apache2/sites-availabl
 
 ## Installation
 
-### Manual Installation
+### Manual
 
 Firstly: will create external volume
 ```