Update v1.1 README

Change-Id: Icd53a838b579aa657031ac81fbc44d67d5ca4ed0
Reviewed-on: https://chromium-review.googlesource.com/c/external/github.com/WebKit/JetStream/+/6652826
Reviewed-by: Daniel Lehmann <dlehmann@chromium.org>

README.md

diff --git a/README.md b/README.md
index 3549819..371143b 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
-# JetStream Clone
+# JetStream 1.1 Clone
 
-This is a clone from the upstream (webkit repository)[https://github.com/WebKit/WebKit/tree/main/Websites/browserbench.org/JetStream2.2]
+This is a clone from the upstream (webkit repository)[https://github.com/WebKit/WebKit/tree/main/Websites/browserbench.org/JetStream1.1]