Update the redis-py version in README of kvrocks2redis tests (apache#…

…2160)

Co-authored-by: 纪华裕 <[email protected]>

utils/kvrocks2redis/tests/README.md

@@ -7,7 +7,7 @@ For testing the `kvrocks2redis` utility, manually check generate AOF.
 * Start `kvrocks` and `kvrocks2redis`
     * [ ] TODO automatic create docker env
 * Install dependency::
-    * pip install git+https://github.com/andymccurdy/redis[email protected]
+    * pip install redis==4.3.6
 * Usage:
 
 ```bash