Do not hardcode Fedora version in README

Test Plan: N/A

X-Origin-Diff: phab/D307
GitOrigin-RevId: 1d2eb3e5b2b854f0a1791d0d9e28260d70566bb4
diff --git a/README.md b/README.md
index 9321fd6..eb40c08 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 ## Environment
 
-We assume a Fedora 30 or 31 host system provisioned using rW, and IntelliJ as the IDE.
+We assume a Fedora host system provisioned using rW, and IntelliJ as the IDE.
 
 For better reproducibility, all builds are executed in containers.