`onHeadersReceived` documentation incomplete/incorrect

[quat1024]

requests-scala/requests/src/requests/Requester.scala

Lines 171 to 177 in cf41094

	*
	* @param onHeadersReceived
	* the second callback to be called, this provides access to the response's status code, status
	* message, headers, and any previous re-direct responses. Returns a boolean, where `false` can
	* be used to
	*
	* @return

Looks like the callback returns Unit rather than a boolean anyway