Correct capitalization of 'Generate Metrics' processor (#37683)

Author: maycmlee

content/en/observability_pipelines/processors/generate_metrics.md

@@ -11,7 +11,7 @@ products:
 
 ## Overview
 
-Many types of logs are meant to be used for telemetry to track trends, such as KPIs, over long periods of time. Generating metrics from your logs is a cost-effective way to summarize log data from high-volume logs, such as CDN logs, VPC flow logs, firewall logs, and network logs. Use the generate metrics processor to generate count, gauge, or distribution metrics from logs that match a query.
+Many types of logs are meant to be used for telemetry to track trends, such as KPIs, over long periods of time. Generating metrics from your logs is a cost-effective way to summarize log data from high-volume logs, such as CDN logs, VPC flow logs, firewall logs, and network logs. Use the Generate Metrics processor to generate count, gauge, or distribution metrics from logs that match a query.
 
 **Note**: The metrics generated are [custom metrics][1] and billed accordingly. See [Custom Metrics Billing][2] for more information.