Update benchmark url in README.md
Updated benchmark url from r18 to the latest r19.
@@ -94,7 +94,7 @@ You may consider checking out
## Benchmarks
-* [TechEmpower Framework Benchmark](https://www.techempower.com/benchmarks/#section=data-r18)
+* [TechEmpower Framework Benchmark](https://www.techempower.com/benchmarks/#section=data-r19)
## License
