Revert "Update config_layer.md"
Revert "Update config_layer.md"

This reverts commit 06ab6b03df8d004ab6b0e87c46a126758151928f.

nasa-gibs/onearth,nasa-gibs/onearth,nasa-gibs/onearth,nasa-gibs/onearth,nasa-gibs/onearth,nasa-gibs/onearth