Merged PR 7700: add continue user activity to toc

add continue user activity to toc

Author: TylerMSFT

windows-apps-src/develop/toc.md

@@ -233,8 +233,9 @@
 ## [Launch an app through file activation](../launch-resume/launch-app-from-file.md)
 ### [Launch the default app for a file](../launch-resume/launch-the-default-app-for-a-file.md)
 ### [Handle file activation](../launch-resume/handle-file-activation.md)
-## [Reserved file and URI scheme names](../launch-resume/reserved-uri-scheme-names.md)
+## [Continue user activity, even across devices](../launch-resume/useractivities.md)
 ## [Auto-launching with AutoPlay](../launch-resume/auto-launching-with-autoplay.md)
+## [Reserved file and URI scheme names](../launch-resume/reserved-uri-scheme-names.md)
 ## [Use app services and extensions](../launch-resume/app-services.md)
 ### [Create and consume an app service](../launch-resume/how-to-create-and-consume-an-app-service.md)
 ### [Convert an app service to run in the same process as its host app](../launch-resume/convert-app-service-in-process.md)