Update .lycheeignore (#205)

Author: StefanThoma

.lycheeignore

@@ -18,3 +18,4 @@ file:///home/runner/work/blog/blog/posts/2024-03-01_rhino_shiny_app_validation/A
 https://rsc.niaid.nih.gov/clinical-research-sites/daids-adverse-event-grading-tables
 https://gowerc.github.io/diffdf/reference/diffdf.html](https://gowerc.github.io/diffdf/reference/diffdf.html)
 https://gowerc.github.io/diffdf/reference/diffdf.html
+https://rsubmission-draft.website-us-east-1.linodeobjects.com/