Minor fixes after review

app/assets/javascripts/environments/components/deploy_board_component.vue

@@ -9,6 +9,7 @@
    * [Mockup](https://gitlab.com/gitlab-org/gitlab-ce/uploads/2f655655c0eadf655d0ae7467b53002a/environments__deploy-graphic.png)
    */
   import _ from 'underscore';
+  import { n__ } from '../../locale';
   import deployBoardSvg from 'empty_states/icons/_deploy_board.svg';
   import instanceComponent from './deploy_board_instance_component.vue';
   import loadingIcon from '../../vue_shared/components/loading_icon.vue';
@@ -40,7 +41,7 @@
         return !this.isLoading && this.isEmpty;
       },
       instanceTitle() {
-        return gl.text.pluralize('Instance', this.deployBoardData.instances);
+        return n__('Instance', 'Instances', this.deployBoardData.instances);
       },
       projectName() {
         return '<projectname>';