feat: change lychee link checker to fail on error

remove continue-on-error

Author: TC-MO

.github/workflows/lychee.yml

@@ -8,7 +8,6 @@ on:
 jobs:
     link-check:
         runs-on: ubuntu-latest
-        continue-on-error: true
         steps:
             -   uses: actions/checkout@v4