hreflang language tags not being added to list of lang tags in info field

[r12a]

see All language tags at https://validator.w3.org/i18n-checker/check?uri=https%3A%2F%2Fwww.afriforum.co.za%2F#validate-by-uri+

[adrianbj]

I am new to multilanguage stuff, but I am also having issues with languages listed in link hreflang not showing up. Maybe I am missing something because this is my first ML site.

I have:

<link rel='alternate' hreflang='en-us' href='http://mysite.org/' />
<link rel='alternate' hreflang='pt-br' href='http://mysite.org/pt/' />

but only see this result: