Replace nodejs icon with devfile-stack-icons link

[thepetk]

What does this PR do?:

Replaces the broken icon for nodejs stack with the one added in the devfile-stack-icons repo.

Which issue(s) this PR fixes:

Fixes devfile/api#1484

PR acceptance criteria:

• Contributing guide
  Have you read the devfile registry contributing guide and followed its instructions?
• Test automation
  Does this repository's tests pass with your changes?
• Documentation
  Does any documentation need to be updated with your changes?
• Check Tools Provider
  Have you tested the changes with existing tools, i.e. Odo, Che, Console? (See devfile registry contributing guide on how to test changes)

How to test changes / Special notes to the reviewer:

[thepetk]

/retest

[thepetk]

@BethGriggs could you please review the PR as you are the owner of the nodejs stack?

[michael-valdron]

/lgtm

[openshift-ci]

@lholmquist: changing LGTM is restricted to collaborators

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lholmquist, michael-valdron, thepetk

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[thepetk]

Merging as the PR is approved by @lholmquist (member of the team owning the stack)