Windows: Fix symlink privilege error detection

The message is in e.args[1] and not e.args[0] at least with python 3.8.
Should be more future proof like this in case it change again.

conf.d/link_confs.py

@@ -3,6 +3,7 @@
 import os
 import sys
 import argparse
+import platform
 
 if __name__=='__main__':
     parser = argparse.ArgumentParser()
@@ -26,7 +27,7 @@ if __name__=='__main__':
             break
         except OSError as e:
             # Symlink privileges are not available
-            if len(e.args) == 1 and 'privilege' in e.args[0]:
+            if platform.system().lower() == 'windows' and e.winerror == 1314:
                 break
             raise
         except FileExistsError: