Added metadata for pages docs

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/216290

doc/user/project/pages/custom_domains_ssl_tls_certification/dns_concepts.md

 ---
 type: concepts
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # DNS records overview

doc/user/project/pages/custom_domains_ssl_tls_certification/index.md

@@ -2,6 +2,9 @@
 last_updated: 2019-07-04
 type: reference, howto
 disqus_identifier: 'https://docs.gitlab.com/ee/user/project/pages/getting_started_part_three.html'
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # Custom domains and SSL/TLS Certificates

doc/user/project/pages/custom_domains_ssl_tls_certification/lets_encrypt_integration.md

 ---
 type: reference
 description: "Automatic Let's Encrypt SSL certificates for GitLab Pages."
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # GitLab Pages integration with Let's Encrypt

doc/user/project/pages/custom_domains_ssl_tls_certification/ssl_tls_concepts.md

 ---
 type: concepts
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # SSL/TLS Certificates

doc/user/project/pages/getting_started/fork_sample_project.md

 ---
 type: reference, howto
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # New Pages website from a forked sample

doc/user/project/pages/getting_started/new_or_existing_website.md

 ---
 type: reference, howto
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # Start a new Pages website from scratch or deploy an existing website

doc/user/project/pages/getting_started/pages_bundled_template.md

 ---
 type: reference, howto
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # New Pages website from a bundled template

doc/user/project/pages/getting_started_part_four.md

 ---
 last_updated: 2020-01-06
 type: reference, howto
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # Creating and Tweaking GitLab CI/CD for GitLab Pages

doc/user/project/pages/getting_started_part_one.md

 ---
 last_updated: 2018-06-04
 type: concepts, reference
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # GitLab Pages domain names, URLs, and baseurls

doc/user/project/pages/index.md

@@ -2,6 +2,9 @@
 description: 'Learn how to use GitLab Pages to deploy a static website at no additional cost.'
 last_updated: 2019-06-04
 type: index, reference
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # GitLab Pages

doc/user/project/pages/introduction.md

 ---
 type: reference
 last_updated: 2020-01-06
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # Exploring GitLab Pages

doc/user/project/pages/pages_access_control.md

 ---
 type: reference, howto
+stage: Release
+group: Release Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
 # GitLab Pages Access Control