docs: fix missing word in terminating connections

closes #2459

Author: Kparobo Abala

Readme.md

@@ -364,9 +364,9 @@ connection.end(function(err) {
 });
 ```
 
-This will make sure all previously enqueued queries are still before sending a
-`COM_QUIT` packet to the MySQL server. If a fatal error occurs before the
-`COM_QUIT` packet can be sent, an `err` argument will be provided to the
+This will make sure all previously enqueued queries are still executed before
+sending a `COM_QUIT` packet to the MySQL server. If a fatal error occurs before
+the `COM_QUIT` packet can be sent, an `err` argument will be provided to the
 callback, but the connection will be terminated regardless of that.
 
 An alternative way to end the connection is to call the `destroy()` method.