Update Light Hook to specify fork's `source_url`

[strideynet]

Thank you for taking the time to work on a Pull Request. Your contribution is really appreciated! :tada: Please don't delete any part of the template, since keeping the provided structure will help maintainers to review your work more rapidly.

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Proposed change*

Change the source_url to match this fork's address. Otherwise, those blindly copy pasting the source_url from this repo when trying to import this Blueprint import the original unmaintained version.

Checklist*

• [x] I followed sections of the Contribution Guidelines relevant to changes I'm proposing.
• [x] I properly tested proposed changes on my system and confirm that they are working as expected.
• [x] I formatted files with Prettier using the command npm run format before submitting my Pull Request.

[LewisSpring]

Hi, Many thanks for your pull request.

Will have a better look at it once I’m at a computer, I will see if I can make sure there’s no other links (other than the docs) that are pointing to the wrong place.