fix: adjust whitespace in Japanese and Chinese translation strings

- Added leading whitespace to the campaign titles in Japanese and Chinese translations for consistency with English formatting.

Author: shhdgit

locale/ja/translation.json

@@ -160,7 +160,7 @@
     },
     "campaign": {
       "title1": "TiDB Cloud Essential",
-      "title2": "はパブリックプレビュー中です。",
+      "title2": " はパブリックプレビュー中です。",
       "end": "ぜひお試しください →",
       "link": "https://tidbcloud.com/"
     },

locale/zh/translation.json

@@ -175,7 +175,7 @@
     },
     "campaign": {
       "title1": "TiDB Cloud Essential",
-      "title2": "开放公测中。",
+      "title2": " 开放公测中。",
       "end": "立即试用 →",
       "link": "https://tidbcloud.com/"
     },