docs: remove npm (#500)

* change to yarn

* missing entities

Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>

docs/package.json

@@ -9,8 +9,7 @@
     "postserve": "./post.sh",
     "prebuild": "./pre.sh",
     "build": "trap 'exit 0' SIGINT; vuepress build --no-cache",
-    "postbuild": "./post.sh",
-    "preinstall": "npx npm-force-resolutions"
+    "postbuild": "./post.sh"
   },
   "keywords": [
     "ethermint",
@@ -22,7 +21,7 @@
   "author": "ChainSafe Systems",
   "license": "ISC",
   "dependencies": {
-    "npm-force-resolutions": "0.0.3",
+    "entities": "^2.0.3",
     "vuepress-theme-cosmos": "^1.0.172"
   },
   "devDependencies": {