Fix urls in npm.md

replace/npm.md

@@ -13,7 +13,7 @@ NPM, a common abbreviation for Node Package Manager, is a package manager for [N
 A lightweight private npm proxy registry.
 
 {% infobox %}
-  - **Website**: verdaccio.org
+  - **Website**: [verdaccio.org](https://verdaccio.org)
   - **Source code**: [GitHub](https://github.com/verdaccio/verdaccio)
   - **License**: [MIT](https://github.com/verdaccio/verdaccio/blob/master/LICENSE)
 {% endinfobox %}
@@ -33,7 +33,7 @@ A JavaScript Package Registry funded, developed and maintained by the community,
 Private npm registry and web for Enterprise.
 
 {% infobox %}
-  - **Website**: cnpmjs.org
+  - **Website**: [cnpmjs.org](https://cnpmjs.org)
   - **Source code**: [GitHub](https://github.com/cnpm/cnpmjs.org)
   - **License**: [MIT](https://github.com/cnpm/cnpmjs.org/blob/master/LICENSE.txt)
 {% endinfobox %}