Fix typos in 5.8 (XMLHttpRequest)

5-network/08-xmlhttprequest/article.md

@@ -93,7 +93,7 @@ xhr.onload = function() {
   if (xhr.status != 200) { // analyze HTTP status of the response
     alert(`Error ${xhr.status}: ${xhr.statusText}`); // e.g. 404: Not Found
   } else { // show the result
-    alert(`Done, got ${xhr.response.length} bytes`); // response is the server
+    alert(`Done, got ${xhr.response.length} bytes`); // response is the server response
   }
 };
 
@@ -190,7 +190,7 @@ All states, as in [the specification](https://xhr.spec.whatwg.org/#states):
 UNSENT = 0; // initial state
 OPENED = 1; // open called
 HEADERS_RECEIVED = 2; // response headers received
-LOADING = 3; // response is loading (a data packed is received)
+LOADING = 3; // response is loading (a data packet is received)
 DONE = 4; // request complete
 ```