Fix sed error when generating changelog data

src/include/release.sh

@@ -118,7 +118,7 @@ __release() {
 __git_msg_vbump() {
     echo "Bump version"
     echo ""
-    __git_info reldiff | sed 's/^/ *  '
+    __git_info reldiff | sed 's/^/ *  /'
 }
 
 __vbump() {