changelog: AA: small typo fixes to metrics changelog entry

Author: Cameron Whiteside

src/content/changelog/ai-crawl-control/2025-10-14-enhanced-metrics-drilldowns.mdx

@@ -44,4 +44,4 @@ Download your filtered view as a CSV:
 4. Apply filters to focus on specific crawlers, time ranges, or response codes
 5. Click **Export** to download your data for further analysis
 
-Learn more about [AI Crawl Control](/ai-crawl-control)
+Learn more about [AI Crawl Control.](/ai-crawl-control)