Documentation/releases: Move checklist and template to upcoming section

The documents for the checklist and template are related to upcoming
releases. Thus, move them to the section for upcoming releases.

Change-Id: Ibe6be506d2833036105b7c86445dca2a6efb7a55
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62410
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/Documentation/releases/index.md b/Documentation/releases/index.md
index 08e39f2..3f02677 100644
--- a/Documentation/releases/index.md
+++ b/Documentation/releases/index.md
@@ -19,6 +19,12 @@
 * [4.15 - November 2021](coreboot-4.15-relnotes.md)
 * [4.16 - Feb 2022](coreboot-4.16-relnotes.md)
 
+
+## Upcoming release
+
+Please add to the release notes as changes are added:
+* [4.17 - May 2022](coreboot-4.17-relnotes.md)
+
 The checklist contains instructions to ensure that a release covers all
 important things and provides a reliable format for tarballs, branch
 names etc.
@@ -29,8 +35,3 @@
 important is taken care of.
 
 * [templates](templates.md)
-
-## Upcoming release
-
-Please add to the release notes as changes are added:
-* [4.17 - May 2022](coreboot-4.17-relnotes.md)