Removed broken link from NDFrame#interpolate docs. (pandas-dev#45990)

* Removed broken link from NDFrame#interpolate docs.

The link at https://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html pointing to the SciPy Interpolation tutorial is broken. An alternative tutorial was not found in the new documentation.

* Fixed whitespace formatting.

Author: bicarlsen

pandas/core/generic.py

@@ -6870,9 +6870,7 @@ def interpolate(
         similar names. These use the actual numerical values of the index.
         For more information on their behavior, see the
         `SciPy documentation
-        <https://docs.scipy.org/doc/scipy/reference/interpolate.html#univariate-interpolation>`__
-        and `SciPy tutorial
-        <https://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html>`__.
+        <https://docs.scipy.org/doc/scipy/reference/interpolate.html#univariate-interpolation>`__.
 
         Examples
         --------