Update Link to Crossplane Docs

[Neskews]

Current link to Crossplane Docs is not valid anymore.

Description of your changes

I have:

• [ ] Read and followed Crossplane's contribution process.
• [ ] Run make reviewable to ensure this PR is ready for review.
• [ ] Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

[morningspace]

@Neskews Thanks for contributing. Could you please solve the DCO issue before we can merge it. Thanks!

[fahedouch]

Thanks, but please sign the commit for DCO https://github.com/apps/dco

(run git commit -a -s --amend, and make sure that the Signed-off-by: NAME <EMAIL> line with your real name is included in the commit message)

could you please also squash your commits.