Clarify wording

Author: meaghanlewis

docs/fundamentals/networking/http/httpclient-guidelines.md

@@ -22,7 +22,7 @@ var handler = new SocketsHttpHandler
 var sharedClient = new HttpClient(handler);
 ```
 
-The preceding `HttpClient` is configured to reuse connections for 15 minutes. After the timespan specified by <xref:System.Net.Http.SocketsHttpHandler.PooledConnectionLifetime> elapses and the connection completes its last associated request (if any), this connection is closed. If there are any requests waiting in the queue, a new connection is created as needed.
+The preceding `HttpClient` is configured to reuse connections for 15 minutes. After the timespan specified by <xref:System.Net.Http.SocketsHttpHandler.PooledConnectionLifetime> elapses and the connection completes its last associated request (if any), this connection is closed. If there are any requests waiting in the queue, a new connection is created.
 
 The 15-minute interval was chosen arbitrarily for illustration purposes. You should choose the value based on the expected frequency of DNS or other network changes.