Update checkout action version from v4 to v5

[Abhinavexists]

The documents referred to the older version of github-actions

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Source	Review	Production	What Changed
actions/tutorials/create-an-example-workflow.md	fpt ghec ghes@ 3.18 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.18 3.17 3.16 3.15 3.14	from reusable

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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Pull Request Overview

This PR updates the documentation for the actions/checkout action, changing the referenced version from v4 to v5 in a workflow example explanation.

Key Changes:

• Updated the comment explaining the actions/checkout action to reference version v5 instead of v4

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[Sharra-writes]

@Abhinavexists I have a bunch of version updates to check in about with the Actions team, so I'll add this to the pile. Thanks for fixing it!