Update metricbeat elasticbeat config (#115)

Author: thecraftman

send-data/elastic-beats.mdx

@@ -70,7 +70,6 @@ Visit the [MetricBeat OSS download page](https://www.elastic.co/downloads/beats/
 ### Configuration
 
 ```yaml
-metricbeat.modules:
 setup.ilm.enabled: false
 metricbeat.config.modules:
   path:
@@ -96,7 +95,6 @@ output.elasticsearch:
 The RDS metric set enables you to monitor your AWS RDS service. [RDS metric set](https://www.elastic.co/guide/en/beats/metricbeat/current/metricbeat-metricset-aws-rds.html) fetches a set of metrics from Amazon RDS and Amazon Aurora DB. With Amazon RDS, users can monitor network throughput, I/O for read, write, and/or metadata operations, client connections, and burst credit balances for their DB instances and send the data to Axiom.
 
 ```yaml
-metricbeat.modules:
 setup.ilm.enabled: false
 metricbeat.config.modules:
   path: