improve translation

Author: lunny

options/locale/locale_en-US.ini

@@ -1327,8 +1327,8 @@ teams.add_team_repository = Add Team Repository
 teams.remove_repo = Remove
 teams.add_nonexistent_repo = "The repository you're trying to add does not exist; please create it first."
 teams.add_duplicate_users = User is already a team member.
-teams.repos.none = No repository could be accessed by this team members.
-teams.members.none = No member on this team.
+teams.repos.none = No repositories could be accessed by this team.
+teams.members.none = No members on this team.
 
 [admin]
 dashboard = Dashboard