Fix spacing of package.json after running Invoke-Build to not end up with local changes (#1688)

Author: bergmeister

package.json

@@ -479,7 +479,7 @@
       "properties": {
         "powershell.sideBar.CommandExplorerVisibility": {
           "type": "boolean",
-          "default":true,
+          "default": true,
           "description": "Specifies the visibility of the Command Explorer in the PowerShell Side Bar."
         },
         "powershell.powerShellExePath": {