Add supporting text for app updates feature

Signed-off-by: Alex Yong <alexjyong@gmail.com>

app/src/main/java/chat/revolt/screens/settings/SettingsScreen.kt

@@ -306,7 +306,7 @@ fun SettingsScreen(
                         },
                         supportingContent = {
                             Column {
-                                
+                                Text(text = "Toggle on to automatically check for new releases")
                                 viewModel.manualCheckResult?.let { result ->
                                     Text(
                                         text = result,
@@ -555,4 +555,4 @@ fun SettingsIcon(danger: Boolean = false, content: @Composable () -> Unit) {
     ) {
         content()
     }
-}
+}