message: Improve message around community url path
diff: <!-- URL Path is only editable during community creation -->
  <app-form-group v-if="method === 'add'" name="path" :label="$gettext(`URL Path`)">
  <div class="help-block">
  - <translate>Community URLs should be memorable, unique, and as short as possible.</translate>
  + <p>
  + <translate>
  + Community URLs should be memorable, unique, and as short as possible.
  + </translate>
  + </p>
  </div>
  <app-form-control-prefixed-input
  prefix="gamejolt.com/c/"
  }"
  data-vv-delay="500"
  />
  + <div class="help-block">
  + <p>
  + <strong><translate>Once a URL path is chosen it cannot be changed!</translate></strong>
  + </p>
  + </div>
  <app-form-control-errors />
  </app-form-group>
  