Changed the default name of the community and RSS in message board still says guest

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.0.5 GA
• Fix Version/s: --Sprint - SP, 6.0.6 GA, 6.1.0 CE RC1
• Component/s: Message Boards
• Labels: None
• Environment: Liferay Version: 6.0.10
• Branch Version/s:
  6.0.x
• Backported to Branch:
  Committed

Steps to duplicate:

1. from settings in control panel, rename default community.
2. add page, add message board to page.
3. view rss for default category in message board. The RSS name is 'Guest'.