update changes.rst

Author: sbailey

doc/changes.rst

@@ -11,13 +11,16 @@ desidatamodel Change Log
 * Update definition of ``ZCAT_NSPEC`` (PR `#187`_).
 * Add note about equivalent width values in ``fuji`` and ``guadalupe`` (PR `#181`_).
 * Add note about units in FITS files (PR `#178`_).
+* Update ``column_descriptions.csv`` for short Description (for FITS headers)
+  and FullDescription (longer, for data model) (PR `#196`_).
 
 .. _`#178`: https://github.com/desihub/desidatamodel/pull/178
 .. _`#181`: https://github.com/desihub/desidatamodel/pull/181
 .. _`#187`: https://github.com/desihub/desidatamodel/pull/187
 .. _`#189`: https://github.com/desihub/desidatamodel/pull/189
 .. _`#192`: https://github.com/desihub/desidatamodel/pull/192
 .. _`#193`: https://github.com/desihub/desidatamodel/pull/193
+.. _`#196`: https://github.com/desihub/desidatamodel/pull/196
 
 23.1 (2023-06-12)
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