docs: clarify makerelease dry-run branch requirement

makerelease.sh

@@ -33,7 +33,7 @@ Use --dry-run to show the computed release version without running Git actions.
 
 Requirements:
 - run from a clean Git working tree
-- current branch must be dev
+- current branch must be dev for real releases
 - main branch must exist locally
 EOF
 }
@@ -74,7 +74,7 @@ fi
 CURRENTBRANCH=$(git rev-parse --abbrev-ref HEAD)
 ORIGBRANCH="${CURRENTBRANCH}"
 
-if [ "${CURRENTBRANCH}" != "dev" ]; then
+if [ "${is_dry_run}" = false ] && [ "${CURRENTBRANCH}" != "dev" ]; then
 	echo "You are not in dev branch!"
 	echo "Use dev branch to make a release!"
 	exit 1