Parquet website pulls docs from wrong repo

It seems that Parquet website (https://parquet.apache.org/documentation/latest/) pulls documentation from old github repo https://github.com/Parquet/parquet-format instead of the Apache repo https://github.com/apache/parquet-format.

**Reporter**: [Nándor Kollár](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=nkollar) / @nandorKollar

_{**Note**: *This issue was originally created as [PARQUET-1063](https://issues.apache.org/jira/browse/PARQUET-1063). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}