document fix_method_jumbos
document fix_method_jumbos

Summary: document fix_method_jumbos

Reviewed By: bertmaher

Differential Revision: D3100963

fb-gh-sync-id: d0f700890bee288c4c5f542aaea1fd3c9f6427e7
fbshipit-source-id: d0f700890bee288c4c5f542aaea1fd3c9f6427e7

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex