Modify DaylightingIlluminanceSetpoint units.md

Modify DaylightingIlluminanceSetpoint Units

Overview

The units of measure for the auc:DaylightingIlluminanceSetpoint should be foot-candles (not lux).

Justification

[1]

Implementation

This proposal is to:

1. Modify the documentation string for the auc:DaylightingIlluminanceSetpoint element.
2. Update the example files.

References

1. https://www.lightingdesignlab.com/sites/default/files/pdf/Footcandle_Lighting%20Guide_Rev.072013.pdf