Ash upload form - minor edits

[Charlotte-Morgan]

hi @lucernae and @ivanbusthomi @RikkiWeber has reviewed the volcanic ash realtime form and has requested some minor changes to the text to make things very clear. I do not expect this will require any other changes to tokens etc - it should be cosmetic UI stuff. This will need to be replicated in the translation #185

Please change: Timezone to Event timezone Eruption height in metres. Calculated from the vent height to Eruption height in metres (above vent height)

these are highlighted below

[Charlotte-Morgan]

I see this is done - we can close this

[lucernae]

Updated into this.