Update of https://odfvalidator.org/

[Regina Henschel]

Hi Michael,

Michael Stahl schrieb am 04-Jun-20 um 19:38:
> hi Regina,
[..]
> you can run the validator from the command prompt; the easiest way is to 
> make sure you have --with-export-validation in autogen.input, then on a 
> master recent enough to have ODF 1.3 changes "make fetch" will download 
> the jar and you can run it via:
> 
>   sh bin/odfvalidator.sh

Thank you, I have put it to my tip collection. Fortunately the web 
validator works now.

Kind regards
Regina