added a table

Author: dcaiced0

design/index.md

@@ -15,7 +15,7 @@ Plugins can interact with the user at different levels, for example, some plugin
 Learn more about the types of Adobe XD plugins you can build.
 
 | **Plugins Panel**   | **Modal Dialog**   | **No UI**   |
-|---------------------------------------|----------------------------------|
+|---------------------------------------|----------------------------------|----------------------------------|
 | Non-Blocking UI - this surface is best used when the user should have access to the canvas while using the plugin.   | Blocking UI - this surface is best used when the plugin needs to run an action and the user shouldn’t modify or change selection of objects on the canvas.   |  Plugin action runs - if the plugin doesn't require any additional user inpupt then it can run the action  |
 
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