Fix JavaScript case and a typo. (#23320)

_includes/callout-danger-async-methods.md

@@ -3,5 +3,5 @@
 
 All API methods are **asynchronous** and start a **transition**. They returns to the caller as soon as the transition is started but **before it ends**. In addition, a method call on a **transitioning component will be ignored**.
 
-[See our Javascript documentation for more informations.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/)
+[See our JavaScript documentation for more information.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/)
 {% endcallout %}

docs/4.0/getting-started/javascript.md

@@ -119,6 +119,6 @@ Bootstrap's plugins don't fall back particularly gracefully when JavaScript is d
 
 ## Util
 
-All Bootstrap Javascript depend on `util.js` and it has to be included alongside the other JS files. If you're using the compiled (or minified) `bootstrap.js`, there is no need to include this—it's already there.
+All Bootstrap's JavaScript files depend on `util.js` and it has to be included alongside the other JS files. If you're using the compiled (or minified) `bootstrap.js`, there is no need to include this—it's already there.
 
 `util.js` includes utility functions and a basic helper for `transitionEnd` events as well as a CSS transition emulator. It's used by the other plugins to check for CSS transition support and to catch hanging transitions.