DOCS-15217 added day to list (#1325)

ltran-mdb · web-flow · commit 45e2a38f30de · 2022-06-24T11:00:56.000-04:00
diff --git a/source/reference/operator/aggregation/densify.txt b/source/reference/operator/aggregation/densify.txt
@@ -157,6 +157,7 @@ The :pipeline:`$densify` stage takes a document with these fields:
        - ``second``
        - ``minute``
        - ``hour``
+       - ``day``
        - ``week``
        - ``month``
        - ``quarter``
