[talk-au] Tag:emergency=water_tank

[forster at ozonline.com.au]

Hi

Tag:emergency=water_tank wiki page talks of a 'large water basin' and  
the photo is of an underground tank. Is this tag suitable for above  
ground fire fighting tanks as are common in Victoria, eg  
https://www.mapillary.com/app/?lat=-37.93622997&lng=145.30965289&z=17&pKey=KcRQ-XafSTnXlPdopuQ3iA&focus=photo&menu=false

If so, it would be good if the wiki explicitly said so. What's the  
procedure for making such a change to the wiki?

Thanks
Tony