NEWS: Fix missed edit

Signed-off-by: Brian Dolbec <dolsen@gentoo.org>
diff --git a/NEWS b/NEWS
index cbcb831..de4fb38 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,6 @@
 News (mainly features/major bug fixes)
 
-portage-2.3.0
+portage-2.3.1
 -----------------
 * Support News-Item-Format 2.0
 * emerge: add --fuzzy-search and --search-similarity