docs: Fix release checklist link in releases doc
The link to the release checklist in the Releases document was linking
to the parent document, not the separate checklist document.
Fixes
@@ -65,7 +65,7 @@ Note that although hypervisor and guest kernel both have versions, these are not
## Release checklist
-The detailed steps to follow to create a new release are specified in the [Release Checklist](#Release-Checklist).
+The detailed steps to follow to create a new release are specified in the [Release Checklist](Release-Checklist.md).
## Release process
