[MRG+1] add changelog entry for fixed and merged PR scikit-learn#10005 issue scikit-learn#9633 (scikit-learn#10025)

* add changelog entry for fixed and merged PR scikit-learn#10005 issue scikit-learn#9633

* change name

* change PR number

Author: gxyd

doc/whats_new/v0.20.rst

@@ -96,6 +96,10 @@ Classifiers and regressors
   identical X values.
   :issue:`9432` by :user:`Dallas Card <dallascard>`
 
+- Fixed a bug in :class:`naive_bayes.GaussianNB` which incorrectly raised
+  error for prior list which summed to 1.
+  :issue:`10005` by :user:`Gaurav Dhingra <gxyd>`.
+
 Decomposition, manifold learning and clustering
 
 - Fix for uninformative error in :class:`decomposition.IncrementalPCA`: