Fix credo style reports following it's update

Mainly transform `with` into `case`

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/mobilizon_web/upload.ex

@@ -94,7 +94,9 @@ defmodule MobilizonWeb.Upload do
          {:same_host, true} <- {:same_host, host == MobilizonWeb.Endpoint.host()} do
       MobilizonWeb.Uploaders.Uploader.remove_file(opts.uploader, path)
     else
-      %URI{} = _uri -> {:error, "URL doesn't match pattern"}
+      %URI{} = _uri ->
+        {:error, "URL doesn't match pattern"}
+
       {:same_host, _} ->
         Logger.error("Media can't be deleted because its URL doesn't match current host")
     end