Update achievement detail text Fixes #1426.
Update achievement detail text
Fixes #1426.

kdeloach/nyc-trees,azavea/nyc-trees,kdeloach/nyc-trees,maurizi/nyc-trees,kdeloach/nyc-trees,maurizi/nyc-trees,kdeloach/nyc-trees,azavea/nyc-trees,azavea/nyc-trees,kdeloach/nyc-trees,maurizi/nyc-trees,azavea/nyc-trees,azavea/nyc-trees,maurizi/nyc-trees