Update index.md

doc/administration/pages/index.md

@@ -119,14 +119,14 @@ The Pages daemon doesn't listen to the outside world.
 
 1. Set the external URL for GitLab Pages in `/etc/gitlab/gitlab.rb`:
 
-    ```ruby
+    ```shell
     pages_external_url 'http://example.io'
     ```
 
 1. [Reconfigure GitLab][reconfigure]
 1. Restart gitlab-pages by running the following command:
 
-     ```ruby
+     ```shell
     sudo gitlab-ctl restart gitlab-pages
     ```
 
@@ -149,7 +149,7 @@ outside world.
 1. Place the certificate and key inside `/etc/gitlab/ssl`
 1. In `/etc/gitlab/gitlab.rb` specify the following configuration:
 
-    ```ruby
+    ```shell
     pages_external_url 'https://example.io'
 
     pages_nginx['redirect_http_to_https'] = true
@@ -163,7 +163,7 @@ outside world.
 1. [Reconfigure GitLab][reconfigure]
 1. Restart gitlab-pages by running the following command:
 
-     ```ruby
+     ```shell
     sudo gitlab-ctl restart gitlab-pages
     ```
 
@@ -191,7 +191,7 @@ world. Custom domains are supported, but no TLS.
 
 1. Edit `/etc/gitlab/gitlab.rb`:
 
-    ```ruby
+    ```shell
     pages_external_url "http://example.io"
     nginx['listen_addresses'] = ['1.1.1.1']
     pages_nginx['enable'] = false
@@ -205,7 +205,7 @@ world. Custom domains are supported, but no TLS.
 1. [Reconfigure GitLab][reconfigure]
 1. Restart gitlab-pages by running the following command:
 
-     ```ruby
+     ```shell
     sudo gitlab-ctl restart gitlab-pages
     ```
 
@@ -226,7 +226,7 @@ world. Custom domains and TLS are supported.
 
 1. Edit `/etc/gitlab/gitlab.rb`:
 
-    ```ruby
+    ```shell
     pages_external_url "https://example.io"
     nginx['listen_addresses'] = ['1.1.1.1']
     pages_nginx['enable'] = false
@@ -243,7 +243,7 @@ world. Custom domains and TLS are supported.
 1. [Reconfigure GitLab][reconfigure]
 1. Restart gitlab-pages by running the following command:
 
-     ```ruby
+     ```shell
     sudo gitlab-ctl restart gitlab-pages
     ```
 
@@ -268,14 +268,14 @@ are stored.
    If you wish to store them in another location you must set it up in
    `/etc/gitlab/gitlab.rb`:
 
-     ```ruby
+     ```shell
      gitlab_rails['pages_path'] = "/mnt/storage/pages"
      ```
 
 1. [Reconfigure GitLab][reconfigure]
 1. Restart gitlab-pages by running the following command:
 
-     ```ruby
+     ```shell
     sudo gitlab-ctl restart gitlab-pages
     ```