Phrase for the tab is: nflj_ams_navigation_tab
You might want to change the ROUTE as well (which you can do via the XF Route Filters system
I've got a few things in mind for when I re write my addons for XF 2.0. Kinda need to wait and see if XF 2.0 adds a search and replace function for phrases first.I don't know how hard it would be to make possible but that could be a suggestion, the ability to replace all 'article' keywords with keywords of your choosing. Again, that might be difficult to make but just a thought.