yet another upper/lower case problem fixed

wetb/hawc2/tests/test_htc_file.py

@@ -205,9 +205,9 @@ class TestHtcFile(unittest.TestCase):
                   './data/DTU_10MW_RWT_Towertop_st.dat',
                   './data/DTU_10MW_RWT_Shaft_st.dat',
                   './data/DTU_10MW_RWT_Hub_st.dat',
-                  './data/dtu_10mw_rwt_blade_st.dat',
-                  './data/dtu_10mw_rwt_ae.dat',
-                  './data/dtu_10mw_rwt_pc.dat',
+                  './data/DTU_10MW_RWT_Blade_st.dat',
+                  './data/DTU_10MW_RWT_ae.dat',
+                  './data/DTU_10MW_RWT_pc.dat',
                   './control/risoe_controller.dll',
                   './control/generator_servo.dll',
                   './control/mech_brake.dll',