typo

init.py

     print('Checking existing zones...')
     zones = get_zones(container)
     if zones is None:
-        print('Failes to get existing zones: Unknown error')
+        print('Failed to get existing zones: Unknown error')
         return 4
 
     print('Checking existing TSIG keys...')
     keys = get_tsig_keys(container)
     if keys is None:
-        print('Failes to get existing TSIG keys: Unknown error')
+        print('Failed to get existing TSIG keys: Unknown error')
         return 5
 
     if '%s.|%s.' % (args.tsig_key_name, args.tsig_key_algo) in keys: