[site] Update lowRISC address
[site] Update lowRISC address

Signed-off-by: Tobias Wölfel <5d52ef3ca07cd47a5b2415323e8983bd6b99d040@mailbox.org>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan