Merge pull request #7043 from jvanbaarsen/update-installation-dox

We need to change config in step 5

doc/install/installation.md

@@ -76,7 +76,7 @@ Is the system packaged Git too old? Remove it and compile from source.
     # Install into /usr/local/bin
     sudo make prefix=/usr/local install
 
-    # When editing config/gitlab.yml (Step 6), change the git bin_path to /usr/local/bin/git
+    # When editing config/gitlab.yml (Step 5), change the git bin_path to /usr/local/bin/git
 
 **Note:** In order to receive mail notifications, make sure to install a mail server. By default, Debian is shipped with exim4 whereas Ubuntu does not ship with one. The recommended mail server is postfix and you can install it with: