added redirect for the renamed slug

Author: Chukslord1

.openpublishing.redirection.json

@@ -13923,6 +13923,11 @@
       "source_path_from_root": "/learn-pr/github/github-introduction-administration/5-knowledge-check.yml",
       "redirect_url": "/training/modules/github-introduction-administration/knowledge-check",
       "redirect_document_id": true
+    },
+     {
+      "source_path_from_root": "/learn-pr/github/github-actions-ci/2b-github-actions-essential-features.yml",
+      "redirect_url": "/training/modules/github-actions-ci/github-actions-essential-features",
+      "redirect_document_id": true
     },
     {
       "source_path_from_root": "/learn-pr/github/introduction-to-github-visual-studio-code/1-introduction.yml",