Hi,
The Document Foundation (http://www.documentfoundation.org) have been using HTTPS recently.
Using HTTPS prefix for documetfoundation.org, it will be a better option.
My suggestion is, we might replace http://www.documentfoundation.org URL to https://www.documentfoundation.org
And, there are only 2 sentences that will be replaced.
https://translations.documentfoundation.org/tr/libo_ui/translate/scp2/source/ooo.po#unit=32665183
Also, there are several URL similar with this situation.
"http://wiki.documentfoundation.org" on
https://translations.documentfoundation.org/tr/libo_ui/translate/swext/mediawiki/help.po#unit=117893716
"http://bugs.documentfoundation.org" on
https://translations.documentfoundation.org/tr/libo_ui/translate/readlicense_oo/docs.po#unit=149537351
"http://www.libreoffice.org" on
https://translations.documentfoundation.org/tr/libo_ui/translate/sfx2/messages.po#unit=149537384