Wrong doc for search browsing

[nicovak]

The documentation is not correct for the wrserver as /v4/threatMatches:find and /v4/threatLists are not implemented anymore.

// API endpoints:
//	/v4/threatMatches:find
//	/v4/threatLists
//	/status
//	/r

As I understood, SB API are not usable for commercial user, so we must use webrisk API that doesn't include these features (threatMatches)

Maybe you should add a deprecation or warning in the readme; I spent some time figuring It out.