Add more detail about when you can edit variants

contents/docs/experiments/creating-an-experiment.mdx

@@ -48,7 +48,7 @@ You can use an existing feature flag if it has multiple variants and `'control'`
 
 ## Experiment variants
 
-By default, all experiments have a `control` and `test` variant. You can add more variants if you like.
+By default, all experiments have a `control` and `test` variant. You can add more variants if you like. If you need to modify the variants after you've created the experiment, you can do so from the feature flag page.
 
 Participants are automatically split equally between variants. If you want assign specific users to a specific variant, see the section below on [distribution and release conditions](#distribution-and-release-conditions).