Use more appropriate placeholder label

config/locales/js-en.yml

@@ -231,7 +231,7 @@ en:
       label_search_watchers: Search watchers
       label_add: Add watchers
       label_discard: Discard selection
-      label_click_to_add: Click to add watchers
+      tyepahead_placeholder: Search for possible watchers
 
     filter_labels:
       assigned_to: "Assignee"

frontend/app/components/wp-panels/watchers-panel/watchers-panel.controller.ts

@@ -54,7 +54,7 @@ export class WatchersPanelController {
       loading: I18n.t('js.watchers.label_loading'),
       loadingError: I18n.t('js.watchers.label_error_loading'),
       autocomplete: {
-        placeholder: I18n.t('js.watchers.label_click_to_add')
+        placeholder: I18n.t('js.watchers.tyepahead_placeholder')
       }
     };