Edit new custom git URL text

- Also renamed screenshots to match standard.

doc/administration/geo/replication/location_aware_git_url.md

@@ -95,12 +95,12 @@ on the external URL of the current host. For example:
 
 ![Clone panel](img/single_git_clone_panel.png)
 
-You can customize the SSH remote URL to use the location-aware
-`git.example.com`. To do so, change the SSH remote URL's host by setting
-`gitlab_rails['gitlab_ssh_host']` in `gitlab.rb` of web nodes.
+You can customize the:
 
-You can customize the HTTP remote URL as shown in
-[Custom Git clone URL for HTTP(S)](../../../user/admin_area/settings/visibility_and_access_controls.md#custom-git-clone-url-for-https).
+- SSH remote URL to use the location-aware `git.example.com`. To do so, change the SSH remote URL's
+  host by setting `gitlab_rails['gitlab_ssh_host']` in `gitlab.rb` of web nodes.
+- HTTP remote URL as shown in
+  [Custom Git clone URL for HTTP(S)](../../../user/admin_area/settings/visibility_and_access_controls.md#custom-git-clone-url-for-https).
 
 ## Example Git request handling behavior
 

doc/user/admin_area/settings/visibility_and_access_controls.md

@@ -137,18 +137,21 @@ from CI/CD jobs, even if _Only SSH_ was selected.
 
 ## Custom Git clone URL for HTTP(S)
 
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/merge_requests/18422) in GitLab 12.4.
+
 You can customize project Git clone URLs for HTTP(S). This will affect the clone
 panel:
 
-![Clone panel](img/clone_panel.png)
+![Clone panel](img/clone_panel_v12_4.png)
+
+For example, if:
 
-For example, if your
-GitLab instance is at `https://example.com`, then project clone URLs look like
-`https://example.com/foo/bar.git`. If you'd to provide clone URLs that look like
-`https://git.example.com/gitlab/foo/bar.git` instead, then you can set this
-setting to `https://git.example.com/gitlab/`.
+- Your GitLab instance is at `https://example.com`, then project clone URLs are like
+  `https://example.com/foo/bar.git`.
+- You want clone URLs that look like `https://git.example.com/gitlab/foo/bar.git` instead,
+  you can set this setting to `https://git.example.com/gitlab/`.
 
-![Custom Git clone URL for HTTP](img/custom_git_clone_url_for_https.png)
+![Custom Git clone URL for HTTP](img/custom_git_clone_url_for_https_v12_4.png)
 
 To specify a custom Git clone URL for HTTP(S):
 
@@ -156,8 +159,8 @@ To specify a custom Git clone URL for HTTP(S):
 1. Click on **Save changes**.
 
 NOTE: **Note:**
-SSH clone URLs can be customized in `gitlab.rb` by setting
-`gitlab_rails["gitlab_ssh_host"]` and other related settings.
+SSH clone URLs can be customized in `gitlab.rb` by setting `gitlab_rails["gitlab_ssh_host"]` and
+other related settings.
 
 ## RSA, DSA, ECDSA, ED25519 SSH keys