Merge branch '64016-add-shell-style-guide-link-to-development-page' into 'master'

Add shell scripting guides to development README

Closes #64016

See merge request gitlab-org/gitlab-ce!31467

doc/development/README.md

@@ -150,6 +150,10 @@ description: 'Learn how to contribute to GitLab.'
 
 - [Go Guidelines](go_guide/index.md)
 
+## Shell Scripting guides
+
+- [Shell scripting standards and style guidelines](shell_scripting_guide/index.md)
+
 ## Other GitLab Development Kit (GDK) guides
 
 - [Run full Auto DevOps cycle in a GDK instance](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/howto/auto_devops.md)