accept a string or array of views (#30746)

this goes along with PR #30651 .

I'm not sure what our practice is for changes like this on an interface.... I'm not technically changing any of the code, just a docblock, so is it safe to send to 6.x?

src/Illuminate/Contracts/Routing/ResponseFactory.php

@@ -26,7 +26,7 @@ public function noContent($status = 204, array $headers = []);
     /**
      * Create a new response for a given view.
      *
-     * @param  string  $view
+     * @param  string|array  $view
      * @param  array  $data
      * @param  int  $status
      * @param  array  $headers