correct i18n translations

resource/locales/en_US/translation.json

@@ -322,8 +322,10 @@
     "outdated": "Page is updated someone and now outdated.",
     "user_not_admin": "Only admin user can delete completely"
   },
-  "page_compare_revision": {
-    "comparing_changes": "Comparing changes"
+  "page_history": {
+    "comparing_versions": "Comparing versions",
+    "comparing_from": "Select this version as a comparing source",
+    "comparing_to": "Select this version as a comparing target"
   },
   "modal_rename": {
     "label": {

resource/locales/ja_JP/translation.json

@@ -325,7 +325,7 @@
     "user_not_admin": "権限のあるユーザーのみが完全削除できます"
   },
   "page_history": {
-    "comparing_changes": "リビジョン比較",
+    "comparing_versions": "バージョン比較",
     "comparing_from": "このバージョンをソースとして選択",
     "comparing_to": "このバージョンをターゲットとして選択"
   },

resource/locales/zh_CN/translation.json

@@ -303,8 +303,10 @@
 		"outdated": "页面已被某人更新，现在已过时。",
 		"user_not_admin": "仅管理员用户可以完全删除"
   },
-  "page_compare_revision": {
-    "comparing_changes": "比较变化"
+  "page_history": {
+    "comparing_versions": "比较版本",
+    "comparing_from": "选择此版本作为比较源",
+    "comparing_to": "选择此版本作为比较目标"
   },
 	"modal_rename": {
 		"label": {

src/client/js/components/RevisionCompare.jsx

@@ -56,7 +56,7 @@ const PageCompare = (props) => {
 
   return (
     <React.Fragment>
-      <div className="float-left">{t('page_history.comparing_changes')}</div>
+      <div className="float-left">{t('page_history.comparing_versions')}</div>
       <div className="mb-3">
         <Dropdown
           className="grw-copy-dropdown"