Splatalogue: fix docstring to match valid intensity type

Minor change.  There may be others that need updating; give me a day to check

Author: keflavich

astroquery/splatalogue/core.py

@@ -219,7 +219,7 @@ def _parse_kwargs(self, *, min_frequency=None, max_frequency=None,
             cm/K for *inverse* cm, i.e. wavenumber, or K for Kelvin
         intensity_lower_limit : `None` or float
             Lower limit on the intensity.  See intensity_type
-        intensity_type : `None` or ``'sij'``, ``'cdms_jpl'``, ``'aij'``
+        intensity_type : `None`, ``'CDMS/JPL (log)'``, ``'Sij-mu2'``, ``'Aij (log)'``
             The type of intensity on which to place a lower limit
         transition : str
             e.g. 1-0