Fix variable name for TipRad in Example_EditOpenFASTModel.py (#51)

Author: yuanchima

openfast_toolbox/io/examples/Example_EditOpenFASTModel.py

@@ -30,7 +30,7 @@
 print('> Hub radius: ',ED['HubRad'])
 print('> Tip radius: ',ED['TipRad'])
 print('> Hub mass:   ',ED['HubMass'])
-ED['TipRadius'] = 64 # Modifying the data
+ED['TipRad'] = 64 # Modifying the data
 #ED.write('_NewFile.dat') # write a new file with modified data