internal_links: Add "/" before fragment identifier

[satyam372]

Fixes: #845

This adds a '/ ' after hostname. when this Url is posted in Zulip message it gets linkified.

[PIG208]

Thanks for the PR! Left some comments.

[satyam372]

PTAL @PIG208

[satyam372]

PTAL @PIG208 And thank you for your suggestion.

[satyam372]

Thanks @gnprice and @PIG208 for the review. just a small question.
In the current tests, we are dynamically generating and verifying the URL. Should we be comparing the generated URL directly against a hardcoded, literal full URL string within the test (e.g., including specific realm URLs and message IDs), rather than dynamically building it?

[gnprice]

Yes. As the issue says:

we should also add a few tests that include, verbatim, the full URL they expect as the output.

For further questions about how to complete the PR, I recommend a chat thread in #mobile-dev-help. That may get a faster response.

[satyam372]

PTAL @PIG208

[satyam372]

PTAL @PIG208

[satyam372]

Please review @gnprice.