fix(replay): Be a little clearer about whether the page is mobile or web specific at the top (#12273)

Author: ryan953

docs/product/explore/session-replay/mobile/performance-overhead.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Replay Performance Overhead"
 sidebar_order: 30
-description: "Learn about how enabling Session Replay impacts the performance of your application."
+description: "Learn about how enabling Session Replay impacts the performance of your mobile application."
 ---
 
 Session Replay for mobile captures snapshots of the view hierarchy as well as a screenshot within the same frame once per second. These are compressed into a video file representing parts of the user’s session, then streamed to Sentry with trace identifiers, breadcrumbs, and other debugging information to reconstruct the full session.

docs/product/explore/session-replay/web/performance-overhead.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Replay Performance Overhead"
 sidebar_order: 48
-description: "Learn more about how enabling Session Replay impacts the performance of your application."
+description: "Learn about how enabling Session Replay impacts the performance of your web application."
 ---
 
 <Include name="session-replay-web-report-bug.mdx" />