Fix format settings. (#14558)

* Fix format settings.

Author: sean-mcmanus

Extension/.vscode/settings.json

@@ -27,12 +27,14 @@
         "editor.formatOnSave": true,
         "editor.defaultFormatter": "vscode.json-language-features",
         "editor.tabSize": 4,
+        "editor.detectIndentation": true,
         "files.insertFinalNewline": false
     },
     "[jsonc]": {
         "editor.formatOnSave": true,
         "editor.defaultFormatter": "vscode.json-language-features",
         "editor.tabSize": 4,
+        "editor.detectIndentation": true,
         "files.insertFinalNewline": true
     },
     "[typescript]": {