Fix order of Save/Close buttons in modal code example (#25855)

Author: Bennet11

docs/4.0/components/modal.md

@@ -67,8 +67,8 @@ Below is a _static_ modal example (meaning its `position` and `display` have bee
         <p>Modal body text goes here.</p>
       </div>
       <div class="modal-footer">
-        <button type="button" class="btn btn-primary">Save changes</button>
         <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
       </div>
     </div>
   </div>