[fpc-pascal] download mirror is missing

[Marco van de Voort]

In our previous episode, Mattias Gaertner said:
> 
> https://www.freepascal.org/down/x86_64/linux-netherlands.var
> 
> 550 /pub/fpc/dist/3.0.2/x86_64-linux

Not missing, but wrong url. The dutch ftp mirror is of the form:

ftp://freepascal.stack.nl/pub/mirrors/fpc/

The dutch mirror shows the right paths:

http://freepascal.stack.nl/down/x86_64/linux-netherlands.html

so it must be something in how the main site is updated.