Add information how to compile individually specified examples only.

[aentinger]

No description provided.

[MathewHDYT]

@per1234 Would be very nice if this could be merged the additional information that was added helped resolve my issue, when trying to build only specific examples from the folder.

[aentinger]

Ping @per1234 😁

[2bndy5]

Suggested change

	```
	```yml

This will add the syntax highlighting that should be even more helpful. And it aligns with the highlighting of the other code snippets in this doc.

[per1234]

I think this information would be better moved to a much needed general explanation of the usage of the action inputs that accept YAML documents. Otherwise the same information would need to be duplicated for the platforms, libraries, and cli-flags inputs as well (#73).

The documentation for each of the individual inputs could then link to that single explanation.

[per1234]

Suggested change

	```
	sketch-paths: |
	- examples/Example-01
	- examples/Example-03
	- examples/Example-03
	```
	<details>
	<summary><b>Click for an example</b></summary>
	<p>
	```
	sketch-paths: |
	- examples/Example-01
	- examples/Example-03
	- examples/Example-03
	```
	</p>
	</details>

This markup will put the example snippet in a collapsible section that is expanded by the reader on demand with a click:

Click for an example

sketch-paths: |
  - examples/Example-01
  - examples/Example-03
  - examples/Example-03

The reason I propose this approach is because I think it would be good to add similar examples to the other complex inputs, but such a significant amount of added content can harm the browsability of the readme for those who are looking for a general overview of the action's API.

[per1234]

Suggested change

	- examples/Example-03
	- examples/Example-05

The examples/Example-03 path was duplicated.

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