Site: Fix link to SHA512 digest and remove links to Github in commit hash per ASF release policy
Site: Fix link to SHA512 digest and remove links to Github in commit hash per ASF release policy

apache/calcite-avatica,looker-open-source/calcite-avatica,apache/calcite-avatica,looker-open-source/calcite-avatica,looker-open-source/calcite-avatica,looker-open-source/calcite-avatica,apache/calcite-avatica,looker-open-source/calcite-avatica,apache/calcite-avatica,apache/calcite-avatica