fixup: benchmark README

benchmark/README.md

@@ -66,15 +66,13 @@ $ cabal bench streamly-benchmarks
 
 ## Building and Running Benchmarks with bench.sh
 
-`bin/bench.sh` script is the top level driver for running benchmarks. It
-runs the requested benchmarks and then creates a report from the results
-using the `bench-show` package. Try `bin/bench.sh --help` for available
-options to run it.
+`<streamly repo>/bin/bench.sh` script is the top level driver for
+running benchmarks. It runs the requested benchmarks and then creates a
+report from the results using the `bench-show` package. Try `bench.sh
+--help` for available options to run it.
 
 ## bench.sh: Quick start
 
-You must be in the repo root directory to run these commands.
-
 Run the default benchmark suites:
 
 ```