Added NEWS item for canonicalize addition

cfitz25 · cfitz25 · commit 3482c013aa52 · 2020-09-06T11:31:51.000+10:00
diff --git a/NEWS.md b/NEWS.md
@@ -133,7 +133,7 @@ Standard library changes
 
 #### Dates
 * `Quarter` period is defined ([#35519]).
-
+* `canonicalize` can now take `Period` as an input ([#37391])
 #### Statistics
 
 
