Fix grammar in deploy key section

conf/locale/locale_en-US.ini

@@ -652,8 +652,8 @@ settings.slack_domain = Domain
 settings.slack_channel = Channel
 settings.deploy_keys = Deploy Keys
 settings.add_deploy_key = Add Deploy Key
-settings.deploy_key_desc = Deploy key only has read-only access. It is not same as personal account SSH keys.
-settings.no_deploy_keys = You haven't added any deploy key.
+settings.deploy_key_desc = Deploy keys have read-only access. They are not the same as personal account SSH keys.
+settings.no_deploy_keys = You haven't added any deploy keys.
 settings.title = Title
 settings.deploy_key_content = Content
 settings.key_been_used = Deploy key content has been used.