change HTB_URL to labs.hackthebox.com

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (52f6858) 67.69% compared to head (3bc83f1) 67.69%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #83 +/- ## ======================================= Coverage 67.69% 67.69% ======================================= Files 67 67 Lines 3355 3355 ======================================= Hits 2271 2271 Misses 1084 1084 ```

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