Update docs/use-cases/observability/clickstack/integration-examples/nginx-logs.md

Co-authored-by: Dale McDiarmid <dale@clickhouse.com>

Author: dhtclk

docs/use-cases/observability/clickstack/integration-examples/nginx-logs.md

@@ -77,7 +77,7 @@ http {
 
 After making this change, reload nginx.
 
-#### Create custom otel collector configuration {#custom-otel}
+#### Create custom OTel collector configuration {#custom-otel}
 
 ClickStack allows you to extend the base OpenTelemetry Collector configuration by mounting a custom configuration file and setting an environment variable. The custom configuration is merged with the base configuration managed by HyperDX via OpAMP.