Fix option name in apidoc
Fix option name in apidoc

Summary: `fatal` has been renamed to `reflection`.

Reviewed By: yfeldblum, spalamarchuk

Differential Revision: D9981225

fbshipit-source-id: bb4ce4669442ef6ca92889ae41b24742935dd99d

facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift