Use code-snippet suffix for extension snippets. Fixes #94625

extensions/markdown-basics/package.json

@@ -85,11 +85,11 @@
 		"snippets": [
 			{
 				"language": "markdown",
-				"path": "./snippets/markdown.json"
+				"path": "./snippets/markdown.code-snippets"
 			}
 		]
 	},
 	"scripts": {
 		"update-grammar": "node ../../build/npm/update-grammar.js microsoft/vscode-markdown-tm-grammar syntaxes/markdown.tmLanguage ./syntaxes/markdown.tmLanguage.json"
 	}
-}
+}