chore(build): adapt changelog generation

Author: posva

Diff for: package.json

@@ -36,7 +36,7 @@
     "test:types": "tsc -p types/test",
     "docs": "vuepress dev docs",
     "docs:build": "vuepress build docs",
-    "changelog": "conventional-changelog -p angular -r 2 -i CHANGELOG.md -s",
+    "changelog": "conventional-changelog -p angular -r 1 -i CHANGELOG.md -s",
     "release": "bash scripts/release.sh"
   },
   "gitHooks": {