fix change in config topics

Author: Feediver1

modules/develop/pages/config-topics.adoc

@@ -225,7 +225,7 @@ CONFIGS
 KEY                           VALUE                          SOURCE
 cleanup.policy                delete                         DYNAMIC_TOPIC_CONFIG
 compression.type              producer                       DEFAULT_CONFIG
-max.message.bytes             1048576                        DEFAULT_CONFIG
+max.message.bytes             20971520                       DEFAULT_CONFIG
 message.timestamp.type        CreateTime                     DEFAULT_CONFIG
 redpanda.datapolicy           function_name:  script_name:   DEFAULT_CONFIG
 redpanda.remote.delete        true                           DEFAULT_CONFIG