[WIP] i18n: Update Simplified Chinese translations (#7576)

* i18n: (zh-CN) #7027

* Rewording
This placeholder is also seen on single user page at Moderation > Accounts, where "this report" doesn't make sense.

* i18n: (zh-CN) #6425

* i18n: (zh-CN) #6497

* i18n: (zh-CN) #6246

* i18n: (zh-CN) Improvements

config/locales/en.yml

@@ -283,7 +283,7 @@ en:
         create_and_resolve: Resolve with note
         create_and_unresolve: Reopen with note
         delete: Delete
-        placeholder: Describe what actions have been taken, or any other updates to this report…
+        placeholder: Describe what actions have been taken, or any other related updates...
       reopen: Reopen report
       report: 'Report #%{id}'
       report_contents: Contents
@@ -550,7 +550,7 @@ en:
       subject:
         one: "1 new notification since your last visit \U0001F418"
         other: "%{count} new notifications since your last visit \U0001F418"
-      title: In your absence…
+      title: In your absence...
     favourite:
       body: 'Your status was favourited by %{name}:'
       subject: "%{name} favourited your status"