docs(ci): add how to run in scripts/relup-test/README.md

scripts/relup-test/README.md

@@ -5,6 +5,7 @@ This collection of scripts is used in CI.
 It can also be used to run the test locally, but limited to ubuntu 20.04 so far.
 
 How to:
-```
 
 ```
+./scripts/relup-test/run-relup-lux.sh v5.0.0
+```