minor fixes

1-js/13-modules/01-modules-intro/article.md

@@ -146,6 +146,8 @@ import `./alert.js`; // Module is evaluated!
 import `./alert.js`; // (shows nothing)
 ```
 
+The second import shows nothing, because the module has already been evaluated.
+
 There's a rule: top-level module code should be used for initialization, creation of module-specific internal data structures. If we need to make something callable multiple times - we should export it as a function, like we did with `sayHi` above.
 
 Now, let's consider a deeper example.