Fix bad WorkflowViewStub link in Compose README.md

Author: rjrjr

workflow-ui/compose/README.md

@@ -115,7 +115,7 @@ We have looked at a few ways of implementing this:
 
 ### UI Factory support
 
-Workflow UI is built around UI factory interfaces like [`ScreenViewFactory`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/ScreenViewFactory.kt) and [`OverlayDialogFactory`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/navigation/OverlayDialogFactory.kt), functions that build and update classic Android `View` and `Dialog` instances for each type of view model rendered by a Workflow tree. To find the appropriate factory to express a rendering of a particular type, container classes like [`WorkflowViewStub`] delegate most of their work to factory finder interfaces like [`ScreenViewFactoryFinder`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/ScreenViewFactoryFinder.kt) and [`OverlayDialogFactoryFinder`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/navigation/OverlayDialogFactoryFinder.kt).
+Workflow UI is built around UI factory interfaces like [`ScreenViewFactory`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/ScreenViewFactory.kt) and [`OverlayDialogFactory`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/navigation/OverlayDialogFactory.kt), functions that build and update classic Android `View` and `Dialog` instances for each type of view model rendered by a Workflow tree. To find the appropriate factory to express a rendering of a particular type, container classes like [`WorkflowViewStub`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/WorkflowViewStub.kt) and [`OverlayDialogFactoryFinder`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/navigation/OverlayDialogFactoryFinder.kt) delegate most of their work to factory finder interfaces like [`ScreenViewFactoryFinder`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/ScreenViewFactoryFinder.kt) and [`OverlayDialogFactoryFinder`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/navigation/OverlayDialogFactoryFinder.kt).
 
 To add seamless Compose support, we add another UI factory and finder interface pair: [`ScreenComposableFactory`](https://github.com/square/workflow-kotlin/blob/9bfd5119fabd0a3dfbc25bf7d93e52c7b31bb4cd/workflow-ui/compose/src/main/java/com/squareup/workflow1/ui/compose/ScreenComposableFactory.kt) and [`ScreenComposableFactoryFinder`](https://github.com/square/workflow-kotlin/blob/9bfd5119fabd0a3dfbc25bf7d93e52c7b31bb4cd/workflow-ui/compose/src/main/java/com/squareup/workflow1/ui/compose/ScreenComposableFactoryFinder.kt).
 And to make those as easy to use as possible, we introduce [`ComposeScreen`](https://github.com/square/workflow-kotlin/blob/9bfd5119fabd0a3dfbc25bf7d93e52c7b31bb4cd/workflow-ui/compose/src/main/java/com/squareup/workflow1/ui/compose/ComposeScreen.kt), a Compose analog to [`AndroidScreen`](https://github.com/square/workflow-kotlin/blob/v1.12.1-beta06/workflow-ui/core-android/src/main/java/com/squareup/workflow1/ui/AndroidScreen.kt)