Fix typo in node.js crypto
Fix typo in node.js crypto

Summary: `publicDecrypt` appeared twice in the libdef

Reviewed By: jbrown215

Differential Revision: D13766419

fbshipit-source-id: d13c8a8a4c3658527bfb944111906e0f233351ca

gabelevi/flow,gabelevi/flow,facebook/flow,gabelevi/flow,mroch/flow,gabelevi/flow,samwgoldman/flow,popham/flow,mroch/flow,popham/flow,gabelevi/flow,popham/flow,gabelevi/flow,facebook/flow,mroch/flow,mroch/flow,samwgoldman/flow,facebook/flow,popham/flow,facebook/flow,gabelevi/flow,facebook/flow,samwgoldman/flow,mroch/flow,facebook/flow,popham/flow,samwgoldman/flow,samwgoldman/flow,samwgoldman/flow,popham/flow,samwgoldman/flow,popham/flow,mroch/flow,mroch/flow,facebook/flow