chore: fix "Endoints" typo in health route comment (#6446)

`app/common/src/main/java/stirling/software/common/util/RequestUriUtils.java:175`
section comment said "Health Endoints" → "Health Endpoints".
Comment-only.

Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>