Standardize to rstring

Author: janbridley

parsnip/parsnip.py

@@ -893,7 +893,7 @@ def __repr__(self):
             r"("
             r"\;[^\;]*\;|"  # Non-semicolon data bracketed by semicolons
             r"\'(?:(?:\\|O|d)'|[^'])*\'|"  # Data with non-escaped single quotes
-            '"[^"]*"|'  # Data with non-escaled double quotes
+            r"\"[^\"]*\"|"  # Data with double quotes
             r"[^\'\"\;\s]*"  # Additional non-bracketed data
             r")[\s]*"
         ),