Created attachment 175100 [details] A diff file that the shows the difference between the original and modified files.
The link to the “Online Guide for newcomers to the UNIX environment” by Edinburgh University in the Bibliography page was broken and I replaced it with a newer one. Here is a link to the bibliography page in which the broken link resides: https://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/bibliography.html
A commit references this bug: Author: bcr Date: Sat Jul 22 16:48:51 UTC 2017 New revision: 50533 URL: https://svnweb.freebsd.org/changeset/doc/50533 Log: Fix a broken link to the "Online Guide for newcomers to the UNIX environment." PR: 212943 Submitted by: eng.shehriusa@gmail.com Changes: head/en_US.ISO8859-1/books/handbook/bibliography/chapter.xml
Thank you for opening this PR with the attached patch. I just committed it. Sorry it had to wait so long. PR closed!