Fix formatting in DevContainer configuration

Adjusted the indentation for the customizations section in the devcontainer.json file to ensure proper JSON structure. This change enhances readability and maintains consistency in the configuration file.

Thank you!

Author: jasonhorner

.devcontainer/devcontainer.json

@@ -7,7 +7,8 @@
     "ghcr.io/devcontainers/features/azure-cli:1": {},
     "ghcr.io/devcontainers/features/github-cli:1": {}
   },
-"customizations": {
+
+  "customizations": {
     "vscode": {
       "extensions": [
         "davidanson.vscode-markdownlint",