Adding base url to correct the failing build in PR

Author: sumoanema

docs/send-data/opentelemetry-collector/remote-management/source-templates/customyaml/changelog.md

@@ -11,6 +11,8 @@ description: Changelog for Custom Yaml source template for OpenTelemetry.
 
 <p><a href={useBaseUrl('docs/beta')}><span className="beta">Beta</span></a></p>
 
+import useBaseUrl from '@docusaurus/useBaseUrl';
+
 ## [1.0.0] - 2025-10-24
 
 ### Added