Update devcontainer.json

Add "sshd": "latest" to `features`

Author: hubwriter

.devcontainer/devcontainer.json

@@ -17,7 +17,8 @@
 
 	// Install features. Type 'feature' in the VS Code command palette for a full list.
 	"features": {
-		"git-lfs": "latest"
+		"git-lfs": "latest",
+		"sshd": "latest"
 	 },
 
 	// Visual Studio Code extensions which help authoring for docs.github.com.