docs: Correct builder to use hostAndPort method (#4322)

Author: ChrisMcD1

docs/migration-guides/v6-to-v7.md

@@ -191,8 +191,7 @@ Jedis 7.0.0 introduces a fluent builder pattern for creating client instances, m
 **New in v7.0.0:**
 ```java
 JedisPooled jedis = JedisPooled.builder()
-    .host("localhost")
-    .port(6379)
+    .hostAndPort("localhost", 6379)
     .clientConfig(DefaultJedisClientConfig.builder()
         .user("myuser")
         .password("mypassword")