Fix ui.sh (#11998)

Author: vitstn

ydb/library/yql/tools/yqlrun/ui.sh

@@ -11,7 +11,7 @@ SCRIPT_DIR="$(dirname $(readlink -f "$0"))"
 UDFS_DIR="${SCRIPT_DIR}/../../udfs;${SCRIPT_DIR}/../../../../../../yql/essentials/udfs;${SCRIPT_DIR}/../../../../../../yql/udfs"
 ASSETS_DIR=${SCRIPT_DIR}/http/www
 MOUNTS_CFG=${SCRIPT_DIR}/mounts.txt
-GATEWAYS_CFG=${SCRIPT_DIR}/../../cfg/tests/gateways.conf
+GATEWAYS_CFG=${SCRIPT_DIR}/../../../../../../yql/essentials/cfg/tests/gateways.conf
 
 PORT=${1:-3000}