[PHP-DOC] Small corrections on install/debian.xml

[Raphael Melo de Oliveira Bastos Sales]

Hi there,

    I'm a translator from the Brazilian Portuguese team and as I was
translating the file install/debian.xml, I noticed something strange:
    On line 90:
    In the last section, PHP was installed without with only core modules.

    I think the "without" should be taken off.

    Also, on lines 101, 169, 172, it should be "additional" not "additionnal".

    If these mistakes are misinterpretations of my part, please
forgive me. If not, I though you guys might want to know and correct
it, as they are small mistakes, which makes them hard to notice. :)

Thanks for the attention,

Raphael