doc: redismodules.rst fix (#2429)

Parentheses were not closed

Co-authored-by: dvora-h <[email protected]>

Author: ashikshezan

docs/redismodules.rst

@@ -91,7 +91,7 @@ These are the commands for interacting with the `RedisJSON module <https://redis
 
     import redis
     r = redis.Redis()
-    r.json().set("mykey", ".", {"hello": "world", "i am": ["a", "json", "object!"]}
+    r.json().set("mykey", ".", {"hello": "world", "i am": ["a", "json", "object!"]})
 
 Examples of how to combine search and json can be found `here <examples/search_json_examples.html>`_.