Update id of markdown-it renderer (microsoft#153876)

Fixes microsoft#153873

Author: mjbvz

extensions/markdown-language-features/package.json

@@ -47,7 +47,7 @@
   "contributes": {
     "notebookRenderer": [
       {
-        "id": "markdownItRenderer",
+        "id": "vscode.markdown-it-renderer",
         "displayName": "Markdown it renderer",
         "entrypoint": "./notebook-out/index.js",
         "mimeTypes": [

extensions/markdown-math/notebook/katex.ts

@@ -8,9 +8,9 @@ import type { RendererContext } from 'vscode-notebook-renderer';
 const styleHref = import.meta.url.replace(/katex.js$/, 'katex.min.css');
 
 export async function activate(ctx: RendererContext<void>) {
-	const markdownItRenderer = (await ctx.getRenderer('markdownItRenderer')) as undefined | any;
+	const markdownItRenderer = (await ctx.getRenderer('vscode.markdown-it-renderer')) as undefined | any;
 	if (!markdownItRenderer) {
-		throw new Error('Could not load markdownItRenderer');
+		throw new Error(`Could not load 'vscode.markdown-it-renderer'`);
 	}
 
 	// Add katex styles to be copied to shadow dom

extensions/markdown-math/package.json

@@ -58,10 +58,10 @@
     ],
     "notebookRenderer": [
       {
-        "id": "markdownItRenderer-katex",
+        "id": "vscode.markdown-it-katex-extension",
         "displayName": "Markdown it KaTeX renderer",
         "entrypoint": {
-          "extends": "markdownItRenderer",
+          "extends": "vscode.markdown-it-renderer",
           "path": "./notebook-out/katex.js"
         }
       }