Add tier badging to Distribution group pages

Add tier badges to Distribution group doc pages

doc/administration/configure.md

@@ -5,7 +5,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 type: reference
 ---
 
-# Configure your GitLab installation
+# Configure your GitLab installation **(FREE SELF)**
 
 Customize and configure your self-managed GitLab installation.
 

doc/administration/operations/cleaning_up_redis_sessions.md

@@ -4,7 +4,7 @@ group: Distribution
 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/#assignments
 ---
 
-# Cleaning up stale Redis sessions
+# Cleaning up stale Redis sessions **(FREE SELF)**
 
 Since version 6.2, GitLab stores web user sessions as key-value pairs in Redis.
 Prior to GitLab 7.3, user sessions did not automatically expire from Redis. If

doc/install/next_steps.md

@@ -4,7 +4,7 @@ group: Distribution
 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/#assignments
 ---
 
-# Steps after installing GitLab
+# Steps after installing GitLab **(FREE SELF)**
 
 Here are a few resources you might want to check out after completing the
 installation.

doc/topics/offline/index.md

@@ -4,7 +4,7 @@ group: Distribution
 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/#assignments
 ---
 
-# Offline GitLab
+# Offline GitLab **(FREE SELF)**
 
 Computers in an offline environment are isolated from the public internet as a security measure. This
 page lists all the information available for running GitLab in an offline environment.

doc/topics/offline/quick_start_guide.md

@@ -4,7 +4,7 @@ group: Distribution
 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/#assignments
 ---
 
-# Getting started with an offline GitLab Installation
+# Getting started with an offline GitLab Installation **(FREE SELF)**
 
 This is a step-by-step guide that helps you install, configure, and use a self-managed GitLab
 instance entirely offline.