Merge pull request #15077 from github/repo-sync

repo sync

Author: Octomerger

.devcontainer/devcontainer.json

@@ -20,7 +20,6 @@
 		"sissel.shopify-liquid",
 		"davidanson.vscode-markdownlint",
 		"bierner.markdown-preview-github-styles",
-		"yzhang.markdown-all-in-one",
 		"streetsidesoftware.code-spell-checker",
 		"hubwriter.open-reusable"
 	],