Update docs/platforms/javascript/common/tracing/span-metrics/examples.mdx

Co-authored-by: Alex Krawiec <[email protected]>

Author: codyde

docs/platforms/javascript/common/tracing/span-metrics/examples.mdx

@@ -468,7 +468,7 @@ const response = await Sentry.startSpan(
 ```
 
 Where to put this in your app:
-- In your search input component, triggered after debounce timeout
+- In your search input component, triggered after a debounce timeout
 
 **Backend (Node.js + Express) - instrument search with meaningful attributes:**