Move and rename SAML troubleshooting page

What does this MR do?

1. Renamed (has no troubleshooting info, just screenshots): Example group SAML and SCIM configurations
2. Moved to the folder with the SAML/SCIM pages: https://docs.gitlab.com/ee/user/group/saml_sso/

Related issues

Moving docs to a new location?

#364599 (closed)

Read the guidelines: https://docs.gitlab.com/ee/development/documentation/index.html#move-or-rename-a-page

• Make sure the old link is not removed and has its contents replaced with a link to the new location.
• Make sure internal links pointing to the document in question are not broken.
• Search and replace any links referring to old docs in GitLab Rails app, specifically under the app/views/ and ee/app/views (for GitLab EE) directories.
• Make sure to add redirect_from to the new document if there are any Disqus comments on the old document thread.
• Update the link in features.yml (if applicable).
• Assign one of the technical writers for review.