Fix to add back support for @types/react 17

Closes GH-40.

Author: wooorm

package.json

@@ -47,11 +47,13 @@
   "dependencies": {
     "@mapbox/hast-util-table-cell-style": "^0.2.0",
     "@types/hast": "^2.0.0",
-    "@types/react": "^18.0.0",
     "hast-to-hyperscript": "^10.0.0",
     "hast-util-whitespace": "^2.0.0",
     "unified": "^10.0.0"
   },
+  "peerDependencies": {
+    "@types/react": ">=17"
+  },
   "devDependencies": {
     "@types/react-dom": "^18.0.0",
     "@types/tape": "^4.0.0",