[5282] Minor word smithing

doc/guide/agent.xml

@@ -267,8 +267,8 @@ http {
     organization which apply to this setup.</simpara>
   </note>
 
-    <para>When you use a HTTP client without TLS support as <command>
-    kea-shell</command> you can a HTTP/HTTPS translator as stunnel
+    <para>When you use an HTTP client without TLS support as <command>
+    kea-shell</command> you can use an HTTP/HTTPS translator such as stunnel
     in client mode. A sample configuration is provided in the
     <filename>doc/examples/https/shell/</filename> directory</para>