Enable GitHub Enterprise Server 3.13 release candidate on GitHub Docs (#50165)

Co-authored-by: Isaac Brown <101839405+isaacmbrown@users.noreply.github.com>
Co-authored-by: Steve Guntrip <stevecat@github.com>
Co-authored-by: Felicity Chapman <felicitymay@github.com>
Co-authored-by: isaacmbrown <isaacmbrown@github.com>
Co-authored-by: docs-bot <77750099+docs-bot@users.noreply.github.com>
Co-authored-by: Peter Bengtsson <peterbe@github.com>
Co-authored-by: Pallavi <96553709+pallsama@users.noreply.github.com>

content/search-github/github-code-search/about-github-code-search.md

@@ -3,7 +3,7 @@ title: About GitHub Code Search
 intro: 'You can search, navigate and understand code across {% data variables.product.prodname_dotcom %} with code search.'
 allowTitleToDifferFromFilename: true
 versions:
-  feature: code-search-code-view
+  feature: code-search-upgrade
 topics:
   - GitHub search
 ---

content/search-github/github-code-search/index.md

@@ -3,7 +3,7 @@ title: GitHub Code Search
 intro: 'Learn how to use code search to find, navigate, and understand code across {% data variables.product.prodname_dotcom %}.'
 allowTitleToDifferFromFilename: true
 versions:
-  feature: code-search-code-view
+  feature: code-search-upgrade
 topics:
   - GitHub search
 children:

content/search-github/github-code-search/understanding-github-code-search-syntax.md

@@ -4,7 +4,7 @@ shortTitle: Code search syntax
 intro: 'You can build search queries for the results you want with specialized code qualifiers, regular expressions, and boolean operations.'
 allowTitleToDifferFromFilename: true
 versions:
-  feature: code-search-code-view
+  feature: code-search-upgrade
 topics:
   - GitHub search
 ---

content/search-github/github-code-search/using-github-code-search.md

@@ -3,7 +3,7 @@ title: Using GitHub Code Search
 intro: "You can use suggestions, completions and saved searches in the upgraded search interface to quickly find what you are looking for across {% data variables.product.prodname_dotcom_the_website %}."
 allowTitleToDifferFromFilename: true
 versions:
-  feature: code-search-code-view
+  feature: code-search-upgrade
 topics:
   - GitHub search
 ---