Add PR number

Author: compulim

CHANGELOG.md

@@ -391,7 +391,7 @@ Breaking changes in this release:
 - Downgraded graph upsert conflict checks, by [@compulim](https://github.com/compulim) in PR [#5674](https://github.com/microsoft/BotFramework-WebChat/pull/5674)
 - Fixed virtual keyboard should show up on tap after being suppressed, in iOS 26.2, by [@compulim](https://github.com/compulim) in PR [#5678](https://github.com/microsoft/BotFramework-WebChat/pull/5678)
 - Fixed compatibility with `create-react-app` by adding file extension to `core-js` imports, by [@compulim](https://github.com/compulim) in PR [#5680](https://github.com/microsoft/BotFramework-WebChat/pull/5680)
-- Fixed virtual keyboard should be collapsed after being suppressed, in iOS 26.3, by [@compulim](https://github.com/compulim) in PR [#XXX](https://github.com/microsoft/BotFramework-WebChat/pull/XXX)
+- Fixed virtual keyboard should be collapsed after being suppressed, in iOS 26.3, by [@compulim](https://github.com/compulim) in PR [#5757](https://github.com/microsoft/BotFramework-WebChat/pull/5757)
 
 ## [4.18.0] - 2024-07-10