Update benchmark.sh (#8615)

Summary:
Fix help message.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8615

Reviewed By: siying

Differential Revision: D30136092

Pulled By: mrambacher

fbshipit-source-id: edf4112570514d709560baaf96a47c5f36f00665

tools/benchmark.sh

@@ -3,9 +3,11 @@
 # REQUIRE: db_bench binary exists in the current directory
 
 if [ $# -lt 1 ]; then
-  echo -n "./benchmark.sh [bulkload/fillseq/overwrite/filluniquerandom/"
-  echo    "readrandom/readwhilewriting/readwhilemerging/updaterandom/"
-  echo    "mergerandom/randomtransaction/compact/multireadrandom]"
+  echo -n "./benchmark.sh [bulkload/fillseq_disable_wal/fillseq_enable_wal/overwrite/"
+  echo    "updaterandom/readrandom/mergerandom/filluniquerandom/multireadrandom/"
+  echo    "fwdrange/revrange/readwhilewriting/readwhilemerging/"
+  echo    "fwdrangewhilewriting/revrangewhilewriting/fwdrangewhilemerging/revrangewhilemerging/"
+  echo    "randomtransaction/universal_compaction/debug]"
   exit 0
 fi
 bench_cmd=$1