📝 Add a line about how export works with plugins

Author: vanyle

docs/user-manual.md

@@ -64,7 +64,7 @@ end
 ```
 
 As you save, the game updates instantly.
-See the `luau-api` folder for a list of available functions lua.
+See the `luau-api` folder for a list of available functions lua. This folder is automatically generated by vectarine and its content should not be modified manually.
 
 With a Luau extension / plugin installed, your text editor be able to autocomplete your code using the functions in `luau-api`. `luau-api` is a great source of documentation and can be though of as a companion to this manual.
 
@@ -852,6 +852,8 @@ Games have their own list of plugins in their `plugins` folder which should be n
 
 If you want to make your own plugins, check the [README](https://github.com/vanyle/vectarine/tree/main/vectarine-plugin-template) of the vectarine plugin template on Github.
 
+When you export a game to a specific platform, the parts of the plugin needed for that platform are obtained from the `.vectabundle` and are stored inside the output file.
+
 # 👥 Collaborating on a project
 
 Working on a game with other people is more fun!
@@ -863,8 +865,6 @@ as it is automatically generated by Vectarine when the project is loaded.
 
 If you don't know Git, do not use it, it is complex to learn.
 
-
-
 ## Vectarine and shared folders
 
 You use shared folder using Google Drive, Dropbox to have multiple people working on the same project.