New Account Creation Procedure: correct two links

62f6d393eae561326d3846061a24d61aeb4089db essentially fixed PR 264562,
however there were three superfluous solidi within URLs. One of the
three – / at a tail – broke what should have been anchoring.

PR: 264562
Reviewed by: gjb
Approved by: gjb
Fixes: 62f6d393eae

Fix typos in new account creation procedure

Differential revision: https://reviews.freebsd.org/D35838