Update index.md

wobsite/index.md

@@ -15,7 +15,7 @@ modular structure the platform, developing a controls model, and
 improving the autonomous flight capabilities of the quadcopter.
 
 For additional information regarding the project, please visit the
-[suppliemental wiki
+[supplemental wiki
 page][1].
 
 [1]: https://wikis.ece.iastate.edu/microcart-senior-design/index.php/2016-2017_Main_Page