fix missing 'changes since' section logic

.github/workflows/create-release.yml

@@ -90,6 +90,8 @@ jobs:
         ## Important Notes
 
         ## Breaking Changes
+
+        ## Changes since v${VERSION}
         EOF
 
         echo -e "$(cat /tmp/CHANGELOG.prepend)\n\n$(cat CHANGELOG.md)" > CHANGELOG.md

CHANGELOG.md

@@ -6,6 +6,8 @@
 
 ## Breaking Changes
 
+## Changes since v7.7.0
+
 # V7.7.0
 
 ## Release Highlights