[en] Update GB + ZA spellers

Development
1

Hello @Yakov

I have updated the British dictionary:

Could you add it to LanguageTool for the next official release?

I have also fixed a couple of entries in the South Africa dictionary after reported in a LibreOffice ticket.

Can’t remember if LanguageTool also has South Africa.

Thanks!

2

Hello @marcoagpinto
I have updated the British and South Africa dictionaries in LanguageTool.

3

Thank you, Yakov!