Add link to Widget doc

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/widgets/model/WidgetContent.kt

@@ -21,6 +21,9 @@ import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
 import im.vector.matrix.android.api.util.JsonDict
 
+/**
+ * Ref: https://github.com/matrix-org/matrix-doc/issues/1236
+ */
 @JsonClass(generateAdapter = true)
 data class WidgetContent(
         @Json(name = "creatorUserId") val creatorUserId: String? = null,

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/widgets/model/WidgetType.kt

@@ -16,6 +16,9 @@
 
 package im.vector.matrix.android.api.session.widgets.model
 
+/**
+ * Ref: https://github.com/matrix-org/matrix-doc/issues/1236
+ */
 sealed class WidgetType(open val preferred: String, open val legacy: String = preferred) {
     object Jitsi : WidgetType("m.jitsi", "jitsi")
     object TradingView : WidgetType("m.tradingview")