Fix link on #1539

CHANGELOG.md

@@ -61,7 +61,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - `component`: Fix [#1328](https://github.com/Microsoft/BotFramework-WebChat/issues/1328). Should not start microphone if input hint is set to `ignoringInput`, in PR [#1286](https://github.com/Microsoft/BotFramework-WebChat/pull/1286)
 - `component`: Fix outgoing typing indicators are not sent and acknowledged properly, in PR [#1286](https://github.com/Microsoft/BotFramework-WebChat/pull/1286)
 - Fix [#1402](https://github.com/Microsoft/BotFramework-WebChat/issues/1402). Add `messageBack` support, by [@corinagum](https://github.com/corinagum) in PR [#1581](https://github.com/Microsoft/BotFramework-WebChat/pull/1581)
-- Fix [#1539], outgoing typing indicators are not sent and acknowledged properly, in PR [#1541](https://github.com/Microsoft/BotFramework-WebChat/pull/1541)
+- Fix [#1539](https://github.com/Microsoft/BotFramework-WebChat/issues/1539). Fix outgoing typing indicators are not sent and acknowledged properly, in PR [#1541](https://github.com/Microsoft/BotFramework-WebChat/pull/1541)
 - `component`: Fix [#1547](https://github.com/Microsoft/BotFramework-WebChat/issues/1547). Fixed unhandled activity type should be forwarded to custom middleware, by [@compulim](https://github.com/compulim) in PR [#1569](https://github.com/Microsoft/BotFramework-WebChat/pull/1569)
 - `playground`: Fix [#1610](https://github.com/Microsoft/BotFramework-WebChat/issues/1610). Fixed bot and user avatar initials not working, by [@compulim](https://github.com/compulim) in PR [#1611](https://github.com/Microsoft/BotFramework-WebChat/pull/1611)
 - `bundle`: Fix [#1613](https://github.com/Microsoft/BotFramework-WebChat/issues/1613). Pass conversationId to DirectLineJS constructor, by [@neetu-das](https://github.com/neetu-das) in PR [#1614](https://github.com/Microsoft/BotFramework-WebChat/pull/1614)