en_AU spelling is incorrect
This issue is prevelant throughout the operating system. i.e. colour instead of color ise instead of ize
example 1 https://i.imgur.com/XkHyfOg.png
example 2 https://i.imgur.com/y8GBqwk.png
Essentially we still spell exactly like the UK. The en_GB locale is correct. The same applies for en_NZ