Update PR labels (#2912)
Summary: replace "example" primary label with "tutorial" and "recipe" cc pytorch/team-audio-core Pull Request resolved: https://github.com/pytorch/audio/pull/2912 Reviewed By: nateanl, mthrok Differential Revision: D41897772 Pulled By: carolineechen fbshipit-source-id: e20540c6f302b5dcc56663a2c074b14a48e4d3e1