notes fix (#4915)

* Notes require date that is quoted
Signed-off-by: Miek Gieben <miek@miek.nl>

* Fix
Signed-off-by: Miek Gieben <miek@miek.nl>

notes/coredns-1.8.6.md

@@ -3,7 +3,7 @@ title = "CoreDNS-1.8.6 Release"
 description = "CoreDNS-1.8.6 Release Notes."
 tags = ["Release", "1.8.6", "Notes"]
 release = "1.8.6"
-date = 2021-10-7T00:00:00+00:00
+date = "2021-10-07T00:00:00+00:00"
 author = "coredns"
 +++