Pontoon/AMO: Update Chinese (China) (zh-CN)

Co-authored-by: bingchuanjuzi <[email protected]> (zh-CN)

Author: mozilla-pontoon

locale/zh_CN/LC_MESSAGES/django.po

@@ -2071,7 +2071,7 @@ msgstr "发行说明"
 
 #: src/olympia/devhub/forms.py:1635
 msgid "Automatic rollback based on version [m.m]."
-msgstr ""
+msgstr "自动回滚到版本 [m.m]。"
 
 #: src/olympia/devhub/forms.py:1710
 msgid "You must select a channel and version to rollback to."
@@ -3929,7 +3929,7 @@ msgstr "新的版本号"
 
 #: src/olympia/devhub/templates/devhub/includes/modal_rollback_version.html:54
 msgid "Release Notes"
-msgstr ""
+msgstr "发行说明"
 
 #: src/olympia/devhub/templates/devhub/includes/modal_rollback_version.html:63
 msgid "Roll back"