Update Style Guide

Update guide for revised version handling.

doc/development/documentation/feature_flags.md

@@ -30,7 +30,7 @@ See how to document them below, according to the state of the flag:
 - [Features that can be enabled or disabled for a single project](#features-enabled-by-project).
 - [Features with the feature flag removed](#features-with-flag-removed).
 
-The [`**(CORE ONLY)**`](styleguide/index.md#product-badges) badge or equivalent for
+The [`**(CORE ONLY)**`](styleguide/index.md#product-tier-badges) badge or equivalent for
 the feature's tier should be added to the line and heading that refers to
 enabling/disabling feature flags as Admin access is required to do so,
 therefore, it indicates that it cannot be done by regular users of GitLab.com.

doc/development/documentation/workflow.md

@@ -154,8 +154,8 @@ Remember:
 
 Ensure the following if skipping an initial Technical Writer review:
 
-- That [product badges](styleguide/index.md#product-badges) are applied.
-- That the GitLab [version](styleguide/index.md#text-for-documentation-requiring-version-text) that
+- That [product badges](styleguide/index.md#product-tier-badges) are applied.
+- That the GitLab [version](styleguide/index.md#gitlab-versions) that
   introduced the feature has been included.
 - That changes to headings don't affect in-app hyperlinks.
 - Specific [user permissions](../../user/permissions.md) are documented.

doc/development/ee_features.md

@@ -9,7 +9,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 - **Write the code and the tests.**: As with any code, EE features should have
   good test coverage to prevent regressions.
 - **Write documentation.**: Add documentation to the `doc/` directory. Describe
-  the feature and include screenshots, if applicable. Indicate [what editions](documentation/styleguide/index.md#product-badges)
+  the feature and include screenshots, if applicable. Indicate [what editions](documentation/styleguide/index.md#product-tier-badges)
   the feature applies to.
 - **Submit a MR to the `www-gitlab-com` project.**: Add the new feature to the
   [EE features list](https://about.gitlab.com/features/).