Add VictoriaMetrics to the list of projects that use xxhash

README.md

diff --git a/README.md b/README.md
index 71fed17..7d2072b 100644
--- a/README.md
+++ b/README.md
@@ -64,5 +64,6 @@
 
 - [InfluxDB](https://github.com/influxdata/influxdb)
 - [Prometheus](https://github.com/prometheus/prometheus)
+- [VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics)
 - [FreeCache](https://github.com/coocood/freecache)
 - [FastCache](https://github.com/VictoriaMetrics/fastcache)