component path relative to IDF (IDFGH-9429)

[ldab]

Change the component path to relative to the IDF as the build will fail if the example is moved from its folder.

[CLAassistant]

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[igrr]

Thanks for the PR @ldab! We accept pull requests on master branch only, to ensure that once the issue is fixed, it is fixed for all subsequent versions. Once it is merged to master, we can backport the fix to the release branches.
Could you please rebase this PR and change the target branch to master?

[rahult-github]

sha=4c2afac35502161ce473660c99e17feb013a378d

[rahult-github]

sha=c88efb7fa8fdd469dbd1a1814d0500239f82e85c

[Alvin1Zhang]

Thanks for contribution again, changes have been merged with 60a7fe9.