Update event text to say "Venue/Event Partner" instead of "Event Partner"

## Description
Update event text to say "Venue/Event Partner" instead of "Event Partner"


![Screenshot 2023-07-06 at 11-55-59 Liverpool - New South Wales Hackerspace](https://github.com/govhackaustralia/hackerspace3/assets/12684286/c7c0d774-5c09-4f45-a5ee-e37e23d0b373)

### Links
https://hackerspace.govhack.org/events/adelaide_south_australia_279
