Fix "Full Changelog" link (#272)

Author: reakaleek

.github/release-drafter.yml

@@ -2,7 +2,7 @@
 template: |
   $CHANGES
 
-  **Full Changelog**: https://github.com/$OWNER/$REPOSITORY/compare/$PREVIOUS_TAG...v$RESOLVED_VERSION
+  **Full Changelog**: https://github.com/$OWNER/$REPOSITORY/compare/$PREVIOUS_TAG...$RESOLVED_VERSION
 name-template: 'docs-builder $RESOLVED_VERSION'
 tag-template: '$RESOLVED_VERSION'
 change-template: '- $TITLE by @$AUTHOR in #$NUMBER'