Fix types dependency

Author: wooorm

package.json

@@ -37,13 +37,13 @@
     "index.js"
   ],
   "dependencies": {
+    "@types/unist": "^2.0.0",
     "lodash.iteratee": "^4.0.0",
     "unist-util-visit": "^4.0.0"
   },
   "devDependencies": {
     "@types/lodash.iteratee": "^4.0.0",
     "@types/tape": "^5.0.0",
-    "@types/unist": "^2.0.0",
     "c8": "^8.0.0",
     "mdast-util-from-markdown": "^1.0.0",
     "prettier": "^2.0.0",