syntax correction

Author: Arshitha

src/dsst_defacing_wf.py

@@ -203,7 +203,7 @@ def main():
     print(f"Run the following command to start a VisualQC Deface session:\n\t{vqcdeface_cmd}\n")
     with open(output / 'QC_prep' / 'defacing_qc_cmd', 'w') as f:
         f.write(vqcdeface_cmd + '\n')
-    run_command(f"export DISPLAY=$TMP_DISPLAY;")
+    run_command(f"export DISPLAY=`echo $TMP_DISPLAY`")
 
 
 if __name__ == "__main__":