chore: fixed bad markdown

docs/9-platform-engineering/9.1.4-plugins.md

@@ -32,16 +32,10 @@ Backstage is a single-page application composed of a set of plugins*.    The fac
 
 The [Plugin directory](https://backstage.io/plugins/) has a good number of open source plugins you can add to your Backstage instance (not to mention the core feature plugins, some of which we used in previous sections).
 
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-2. Continue following the above guide to manually register a component entity to your Backstage instance.  *You may find it helpful for future exercises to take note of the information that is provided alongside your components in the UI, and consider where it comes from.*
+1. Continue following the above guide to manually register a component entity to your Backstage instance.  *You may find it helpful for future exercises to take note of the information that is provided alongside your components in the UI, and consider where it comes from.*
 
 ### Exercise 2: Write a Custom Plugin
 
 Well, it's the end of the chapter and you probably saw this coming, but it's time to write your own custom plugin.
 
 Checkout the Backstage docs on [creating a custom plugin](https://backstage.io/docs/plugins/create-a-plugin/) and develop a custom plugin. This plugin should live in its own repo and be imported into your Backstage instace. This can be a frontend or backend plugin (or both).
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-## Deliverables
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