Removed the extra "statementId" parameter from the alternate syntax request example.
The intended xAPI method MUST be included as the value of the "method" query string parameter.
The Learning Record Provider MUST NOT include any other query string parameters on the request.
Removed the extra "statementId" parameter from the alternate syntax request example.
duplicate of https://github.com/adlnet/xAPI-Spec/pull/1059 , as requested