Add npm link of zotero-types

Author: northword

index.html

@@ -380,6 +380,12 @@ <h2>🛠️ Core Libraries & Tools</h2>
                 type checking, and safer development experiences.
               </p>
               <div class="links">
+                <a
+                  href="https://www.npmjs.com/package/zotero-types"
+                  class="btn btn-primary"
+                  target="_blank"
+                  >NPM</a
+                >
                 <a
                   href="https://github.com/windingwind/zotero-types"
                   class="btn btn-outline"