Typo fix (#1300)

Signed-off-by: Nathan McDougall <[email protected]>

Author: nathanjmcdougall

pandera/backends/pandas/builtin_checks.py

@@ -297,7 +297,7 @@ def unique_values_eq(data: PandasData, values: Iterable):
     """Ensure that unique values in the data object contain all values.
 
     .. note::
-        In constrast with :func:`isin`, this check makes sure that all the items
+        In contrast with :func:`isin`, this check makes sure that all the items
         in the ``values`` iterable are contained within the series.
 
     :param values: The set of values that must be present. Maybe any iterable.