[ios-sdk] Work around appledoc bug that dropped protocol from property declarations.
[ios-sdk] Work around appledoc bug that dropped protocol from property declarations.

Summary:
Appledoc has a bug that caused the protocol name to be dropped from property declarations, leaving
them looking like 'id<> delegate' rather than 'id<SomeProtocol> delegate'. Until the bug gets fixed,
hacking around it by explicitly replacing the wrong string with the right string.

Test Plan:
- Ran build_documentation.sh, looked at resulting HTML, saw protocol names

Revert Plan:

Reviewers: jacl, mmarucheck, gregschechte, ayden, caabernathy

Reviewed By: jacl

Differential Revision: https://phabricator.fb.com/D497310

taptaptap/facebook-ios-sdk,anthonylai/facebook-ios-sdk,FiftyThree/facebook-ios-sdk,hibu/facebook-ios-sdk,FiftyThree/facebook-ios-sdk,hibu/facebook-ios-sdk,Subsplash/facebook-ios-sdk,shepting/facebook-ios-sdk,wooga/facebook-ios-sdk,flovilmart/facebook-ios-sdk,Citrrus/facebook-ios-sdk,hibu/facebook-ios-sdk,shepting/facebook-ios-sdk,ShareKit/facebook-ios-sdk,anthonylai/facebook-ios-sdk,1234-/facebook-ios-sdk,flovilmart/facebook-ios-sdk,Subsplash/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,tipbit/facebook-ios-sdk,anthonylai/facebook-ios-sdk,hibu/facebook-ios-sdk,wooga/facebook-ios-sdk,flovilmart/facebook-ios-sdk,Amnysia/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,1234-/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,TimeIncOSS/facebook-ios-sdk,wooga/facebook-ios-sdk,TimeIncOSS/facebook-ios-sdk,1234-/facebook-ios-sdk,taptaptap/facebook-ios-sdk,Citrrus/facebook-ios-sdk,Citrrus/facebook-ios-sdk,hibu/facebook-ios-sdk,beamly/facebook-ios-sdk,shepting/facebook-ios-sdk,Amnysia/facebook-ios-sdk,flovilmart/facebook-ios-sdk,taptaptap/facebook-ios-sdk,beamly/facebook-ios-sdk,1234-/facebook-ios-sdk,Amnysia/facebook-ios-sdk,FiftyThree/facebook-ios-sdk,beamly/facebook-ios-sdk,TimeIncOSS/facebook-ios-sdk,ShareKit/facebook-ios-sdk,1234-/facebook-ios-sdk,Subsplash/facebook-ios-sdk,tipbit/facebook-ios-sdk,flovilmart/facebook-ios-sdk,shepting/facebook-ios-sdk,shepting/facebook-ios-sdk,tipbit/facebook-ios-sdk,ShareKit/facebook-ios-sdk