https://includecpp.org url leads to bad cert error #9
Description
Current Situation
The website https://includecpp.org url leads to bad cert error as includecpp.org is not part of the cert. www.includecpp.org is and doesn't have this problem.
Desired Sitation
As commonly expected of websites, for http://includecpp.org to work normally same as how http://www.includecpp.org is working right now.
It is also suggested for http://www.includecpp.org to redirect to http://includecpp.org .
Extra Info
The CNAME file in the project is pointing to www.includecpp.org instead of includecpp.org and its git history suggests that there at least two attempts on the main branch to point it to includecpp.org instead, in 2018 and 2019, but they were reverted in the same day of the attempt.
The base domain includecpp.org seems not to have the github pages suggested DNS records while the subdomain www.includecpp.org has:
$ dig includecpp.org
...
;; QUESTION SECTION:
;includecpp.org. IN A
;; ANSWER SECTION:
includecpp.org. 1799 IN A 192.30.252.154
includecpp.org. 1799 IN A 192.30.252.153
...
$ dig www.includecpp.org
...
;; QUESTION SECTION:
;www.includecpp.org. IN A
;; ANSWER SECTION:
www.includecpp.org. 1799 IN CNAME include-cpp.github.io.
include-cpp.github.io. 3600 IN A 185.199.111.153
include-cpp.github.io. 3600 IN A 185.199.108.153
include-cpp.github.io. 3600 IN A 185.199.110.153
include-cpp.github.io. 3600 IN A 185.199.109.153
...