Adding connection step to bloom filter examples (#2478)

* Fixes #2415, adds a connect step to bloom commands

* Update redismodules.rst

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Author: nermiller

docs/redismodules.rst

@@ -12,25 +12,28 @@ These are the commands for interacting with the `RedisBloom module <https://redi
 **Create and add to a bloom filter**
 
 .. code-block:: python
-
-    import redis
-    filter = redis.bf().create("bloom", 0.01, 1000)
-    filter.add("bloom", "foo")
+   
+    import redis 
+    r = redis.Redis()
+    r.bf().create("bloom", 0.01, 1000) 
+    r.bf().add("bloom", "foo")
 
 **Create and add to a cuckoo filter**
 
 .. code-block:: python
 
-    import redis
-    filter = redis.cf().create("cuckoo", 1000)
-    filter.add("cuckoo", "filter")
+    import redis 
+    r = redis.Redis()
+    r.cf().create("cuckoo", 1000)
+    r.cf().add("cuckoo", "filter")
 
 **Create Count-Min Sketch and get information**
 
 .. code-block:: python
 
     import redis
-    r = redis.cms().initbydim("dim", 1000, 5)
+    r = redis.Redis()
+    r.cms().initbydim("dim", 1000, 5)
     r.cms().incrby("dim", ["foo"], [5])
     r.cms().info("dim")
 
@@ -39,8 +42,9 @@ These are the commands for interacting with the `RedisBloom module <https://redi
 .. code-block:: python
 
     import redis
-    r = redis.topk().reserve("mytopk", 3, 50, 4, 0.9)
-    info = r.topk().info("mytopk)
+    r = redis.Redis()
+    r.topk().reserve("mytopk", 3, 50, 4, 0.9)
+    r.topk().info("mytopk)
 
 .. automodule:: redis.commands.bf.commands
     :members: BFCommands, CFCommands, CMSCommands, TOPKCommands