Hi,
There is mistake in LibreOffice 5.1 Getting Started on the 46 page.
https://www.https://addons.mozilla.org/en-US/firefox/themes/
This is several links:
The http://www.getpersonas.com/ looks like "http", "://www." and "s".
And https://addons.mozilla.org/en-US/firefox/themes/ looks like
https://addons.mozilla.org/en-US/firefox/themes/.
I think we should to delete the "https://www." part with links of
http://www.getpersonas.com/.
Best regards,
Lera