Typo for SERVICE_SDB_CALLABLESTATEMENT

Change-Id: If86d82e19dd62b1e55cb336d3b9a6d8b92c1d538
Reviewed-on: https://gerrit.libreoffice.org/8831
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>