Update home page wording

Updating home page language referring to collaborators (hoping you can merge this in)

index.html

@@ -30,7 +30,7 @@ <h2>What is BuildingSync?</h2>
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-			<p>The schema was developed by a <a href="http://www.nrel.gov/">National Renewable Energy Laboratory (NREL)</a> led working group. Working group participants included <a href="/about/collaborators/">industry partners, national laboratories, and industry organizations</a>.</p>
+			<p>The schema was developed by a <a href="http://www.nrel.gov/">National Renewable Energy Laboratory (NREL)</a> led working group. Working group participants included <a href="/about/collaborators/">industry collaborators, national laboratories, and government agencies</a>.</p>
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