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Fix grammar and capitalization

Author: AnnaMHuff

articles/azure-monitor/app/opentelemetry-add-modify.md

@@ -226,7 +226,7 @@ Telemetry emitted by Azure SDKS is automatically [collected](https://github.com/
 > The Azure Monitor OpenTelemetry Distros include custom mapping and logic to automatically emit [Application Insights standard metrics](standard-metrics.md).
 
 > [!TIP]
-> All OpenTelemetry metrics whether automatically collected from instrumentation libraries or manual collected from custom coding are currently considered Application Insights "custom metrics" for billing purposes. [Learn More](pre-aggregated-metrics-log-metrics.md#custom-metrics-dimensions-and-preaggregation).
+> All OpenTelemetry metrics whether automatically collected from instrumentation libraries or manually collected from custom coding are currently considered Application Insights "custom metrics" for billing purposes. [Learn more](pre-aggregated-metrics-log-metrics.md#custom-metrics-dimensions-and-preaggregation).
 
 ### Add a community instrumentation library