Merge pull request #75 from jbdv-no/bugfix_fstDeck_write_SvD

Update fast_input_deck.py, to assign `filename_SvD` (instead of `filename_AD`) to `fst['ServoFile']`

Author: rthedin

openfast_toolbox/io/fast_input_deck.py

@@ -445,7 +445,7 @@ def write(self, filename=None, prefix='', suffix='', directory=None):
             fst['BDBldFile(3)'] = '"' + os.path.basename(filename_BD) + '"'
             fst['InflowFile']   = '"' + os.path.basename(filename_IW) + '"'
             fst['AeroFile']     = '"' + os.path.basename(filename_AD) + '"'
-            fst['ServoFile']    = '"' + os.path.basename(filename_AD) + '"'
+            fst['ServoFile']    = '"' + os.path.basename(filename_SvD)+ '"'
             fst['HydroFile']    = '"' + os.path.basename(filename_HD) + '"'
             fst['SubFile']      = '"' + os.path.basename(filename_SD) + '"'
             fst['MooringFile']  = '"' + os.path.basename(filename_MD) + '"'