Merge pull request microsoft#257921 from mjbvz/changing-whitefish

Pick up latest md language server

Author: mjbvz

extensions/markdown-language-features/package-lock.json

@@ -776,7 +776,7 @@
     "punycode": "^2.3.1",
     "vscode-languageclient": "^8.0.2",
     "vscode-languageserver-textdocument": "^1.0.11",
-    "vscode-markdown-languageserver": "^0.5.0-alpha.11",
+    "vscode-markdown-languageserver": "^0.5.0-alpha.12",
     "vscode-uri": "^3.0.3"
   },
   "devDependencies": {