Fix invalid archive error message

src/borg/helpers/parseformat.py

@@ -500,7 +500,7 @@ def archivename_validator():
     def validator(text):
         text = replace_placeholders(text)
         if '/' in text or '::' in text or not text:
-            raise argparse.ArgumentTypeError('Invalid repository name: "%s"' % text)
+            raise argparse.ArgumentTypeError('Invalid archive name: "%s"' % text)
         return text
     return validator