fix typo i missed until after merge

Author: Cynosphere

src/content/docs/ext-dev/manifest.md

@@ -76,7 +76,7 @@ There are many settings types that you can use to configure your extension in Mo
 All settings types take optional `displayName` and `description` arguments, as well as a `default`. If a default is not provided, and the user hasn't configured the extension, the value returned from `moonlight.getConfigOption` will be undefined.
 
 Settings also take an optional `advice` argument which advices the user to reload the client, restart the client, or do nothing.
-If no `advice` is provided the default is to suggest a reload, this is different from setting to to `"reload"` which indicates a required reload.
+If no `advice` is provided the default is to suggest a reload, this is different from setting to `"reload"` which indicates a required reload.
 
 Note that the type defined is purely for what component to use in Moonbase - it is up to you to ensure that you save the right type to the config file.