docs: correct headline (#4729)

Author: Zerogiven

docs/documentation/stories/global-scripts.md

@@ -1,4 +1,4 @@
-# Global styles
+# Global scripts
 
 You can add Javascript files to the global scope via the `apps[0].scripts`
 property in `.angular-cli.json`.
@@ -20,4 +20,4 @@ You can also rename the output and lazy load it by using the object format:
   { "input": "lazy-script.js", "lazy": true },
   { "input": "pre-rename-script.js", "output": "renamed-script" },
 ],
-```
+```