configure stub indentation

stubs/provider.stub

@@ -6,23 +6,23 @@ use Illuminate\Support\ServiceProvider;
 
 class {{ class }} extends ServiceProvider
 {
-    /**
-     * Register services.
-     *
-     * @return void
-     */
-    public function register()
-    {
-        //
-    }
-
-    /**
-     * Bootstrap services.
-     *
-     * @return void
-     */
-    public function boot()
-    {
-        //
-    }
+  /**
+  * Register services.
+  *
+  * @return void
+  */
+  public function register()
+  {
+    //
+  }
+  
+  /**
+  * Bootstrap services.
+  *
+  * @return void
+  */
+  public function boot()
+  {
+    //
+  }
 }