Fix typo (mdn#40582)

* Typo in resource_management/index.md

* Sneak in smth else

---------

Co-authored-by: Joshua Chen <sidachen2003@gmail.com>

Author: johanrd

files/en-us/web/javascript/guide/resource_management/index.md

@@ -314,7 +314,7 @@ readUntil(stream, "b")
   });
 ```
 
-So, `using` does not swallow an errors: all errors that occur are still thrown, but the resources get closed right before that. Now, what happens if the resource cleanup itself also throws an error? Let's use a more contrived example:
+So, `using` does not swallow any errors: all errors that occur are still thrown, but the resources get closed right before that. Now, what happens if the resource cleanup itself also throws an error? Let's use a more contrived example:
 
 ```js
 class MyReader {

files/en-us/web/javascript/reference/global_objects/asynciterator/symbol.asyncdispose/index.md

@@ -1,5 +1,6 @@
 ---
 title: AsyncIterator.prototype[Symbol.asyncDispose]()
+short-title: "[Symbol.asyncDispose]()"
 slug: Web/JavaScript/Reference/Global_Objects/AsyncIterator/Symbol.asyncDispose
 page-type: javascript-instance-method
 browser-compat: javascript.builtins.AsyncIterator.@@asyncDispose

files/en-us/web/javascript/reference/global_objects/iterator/symbol.dispose/index.md

@@ -1,5 +1,6 @@
 ---
 title: Iterator.prototype[Symbol.dispose]()
+short-title: "[Symbol.dispose]()"
 slug: Web/JavaScript/Reference/Global_Objects/Iterator/Symbol.dispose
 page-type: javascript-instance-method
 browser-compat: javascript.builtins.Iterator.@@dispose