[skip ci] docs(typo): missing quote

Author: nklayman

docs/guide/guide.md

@@ -21,7 +21,7 @@ module.exports = {
       externals: ['my-native-dep'],
       // If you are using Yarn Workspaces, you may have multiple node_modules folders
       // List them all here so that VCP Electron Builder can find them
-      nodeModulesPath: ['../../node_modules', './node_modules]
+      nodeModulesPath: ['../../node_modules', './node_modules']
     }
   }
 }