Update EndpointDecodeDict

Summary:
Update EndpointDecodeDict.txt to support new names.
Make WhatsApp two words to align with the current situation.

Reviewed By: liliarizona

Differential Revision: D62056156

fbshipit-source-id: 6337eb9f819cc781c9b9164e0b12753da991ef99

Bump the Version to v20.0.1

Summary: Bump the version to release a new version with the bug fix.

Reviewed By: yoongyj, liliarizona

Differential Revision: D61582701

fbshipit-source-id: 1e44ecadc8b78f62ae9752c61196c904850839a3

Auto-generated php SDK code update

Summary: ignore-conflict-markers

Reviewed By: liliarizona

Differential Revision: D58591423

fbshipit-source-id: 9695adc477600920ac121d0903eb72348a487035

Auto-generated php SDK code update

Summary: ignore-conflict-markers

Reviewed By: stcheng

Differential Revision: D56033507

fbshipit-source-id: 0d905f15789f9c0d18d4c8ad291539c44e00c62e

Auto-generated php SDK code update

Summary: ignore-conflict-markers

Reviewed By: stcheng

Differential Revision: D54971065

fbshipit-source-id: e912137558596dcef4c99d560053d49696740763