Fix type

Signed-off-by: Chris Oelerich <[email protected]>

Author: ChunkLightTuna

docs/interactions/ui-components/buttons.mdx

@@ -249,7 +249,7 @@ if you are trying to create a self-role system with buttons, for example. This i
 
 Persistent views work forever. When the bot goes offline, the buttons will stop working. When the bot comes back online, however, the buttons will start working again.
 
-In a Persistent View, the timeout must be set to `None` and all the children in the view much have a `custom_id` attribute set.
+In a Persistent View, the timeout must be set to `None` and all the children in the view must have a `custom_id` attribute set.
 
 ```python
 @bot.event