Add link to the documentation about Ibis datatypes (#2057)

Signed-off-by: Deepyaman Datta <[email protected]>

Author: deepyaman

pandera/api/ibis/components.py

@@ -35,7 +35,7 @@ def __init__(
         """Create column validator object.
 
         :param dtype: datatype of the column. The datatype for type-checking
-            a dataframe. All `Ibis datatypes <TODO(deepyaman): Insert link.>`__,
+            a dataframe. All `Ibis datatypes <https://ibis-project.org/reference/datatypes>`_,
             supported built-in Python types that are supported by Ibis,
             and the pandera Ibis engine :ref:`datatypes <ibis-dtypes>`.
         :param checks: checks to verify validity of the column

pandera/api/polars/components.py

@@ -41,7 +41,7 @@ def __init__(
         """Create column validator object.
 
         :param dtype: datatype of the column. The datatype for type-checking
-            a dataframe. All `polars datatypes <https://docs.pola.rs/py-polars/html/reference/datatypes.html>`__,
+            a dataframe. All `polars datatypes <https://docs.pola.rs/py-polars/html/reference/datatypes.html>`_,
             supported built-in python types that are supported by polars,
             and the pandera polars engine :ref:`datatypes <polars-dtypes>`.
         :param checks: checks to verify validity of the column