[bazel] Fix echoed repository cache path in airgapped prep script
[bazel] Fix echoed repository cache path in airgapped prep script

Signed-off-by: Dan McArdle <8fb240f11ec935676fcfd8aed04f42f9ee63efa8@google.com>

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