Add experiment and beta badges to package managers docs

Author: David Fernandez

doc/user/packages/composer_repository/index.md

@@ -4,7 +4,7 @@ group: Package Registry
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Composer packages in the Package Registry **(FREE ALL)**
+# Composer packages in the Package Registry **(FREE ALL BETA)**
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/15886) in GitLab 13.2.
 > - [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/221259) from GitLab Premium to GitLab Free in 13.3.

doc/user/packages/conan_repository/index.md

@@ -4,7 +4,7 @@ group: Package Registry
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Conan packages in the Package Registry **(FREE ALL)**
+# Conan packages in the Package Registry **(FREE ALL EXPERIMENT)**
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/8248) in GitLab 12.6.
 > - [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/221259) from GitLab Premium to GitLab Free in 13.3.

doc/user/packages/debian_repository/index.md

@@ -4,7 +4,7 @@ group: Package Registry
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Debian packages in the Package Registry **(FREE ALL)**
+# Debian packages in the Package Registry **(FREE ALL EXPERIMENT)**
 
 > - Debian API [introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/42670) in GitLab 13.5.
 > - Debian group API [introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/66188) in GitLab 14.2.

doc/user/packages/go_proxy/index.md

@@ -4,7 +4,7 @@ group: Package Registry
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Go proxy for GitLab **(FREE ALL)**
+# Go proxy for GitLab **(FREE ALL EXPERIMENT)**
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/27376) in GitLab 13.1.
 > - It's deployed behind a feature flag, disabled by default.

doc/user/packages/helm_repository/index.md

@@ -4,7 +4,7 @@ group: Package Registry
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Helm charts in the Package Registry **(FREE ALL)**
+# Helm charts in the Package Registry **(FREE ALL BETA)**
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/18997) in GitLab 14.1.
 

doc/user/packages/rubygems_registry/index.md

@@ -4,7 +4,7 @@ group: Package Registry
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Ruby gems in the Package Registry **(FREE ALL)**
+# Ruby gems in the Package Registry **(FREE ALL EXPERIMENT)**
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/803) in GitLab 13.10.