fix: improve url detection to avoid false positives

[makepanic]

I've noticed that the url detection is a bit too simple as it creates false hyperlinks for regular words starting with http.

e.g. httpstatus would create a hyperlink even if it's unlikely expected to be there.

Note: I'm not sure if it's only for me but the test script isn't working. It also seems like there's no github action to actually execute the tests.

 FAIL  test/spec.ts
  ● Test suite failed to run

    TypeError: Cannot read properties of undefined (reading 'createNodeArray')

      at visitor (node_modules/ts-jest/dist/transformers/hoist-jest.js:84:61)

[mohsen1]

Thank you for your PR and pointing out to the infra issues. I fixed the tests in CI. Please rebase and I'm happy to merge

[makepanic]

Thanks. I've rebased onto master.