Display Gitlab/Forum url before user name on detail_change_form
See: https://getbootstrap.com/docs/5.2/forms/input-group/#basic-example
<label for="basic-url" class="form-label">Your vanity URL</label>
<div class="input-group mb-3">
<span class="input-group-text" id="basic-addon3">https://example.com/users/</span>
<input type="text" class="form-control" id="basic-url" aria-describedby="basic-addon3">
</div>