move cdms from docs to linelists. Add both in index

Author: keflavich

docs/index.rst

@@ -338,6 +338,8 @@ well as  cross section and collision rates.  Those services are:
   splatalogue/splatalogue.rst
   vamdc/vamdc.rst
   hitran/hitran.rst
+  linelists/cdms/cdms.rst
+  jplspec/jplspec.rst
 
 Other
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