Remove vtctl binary docs and update vtctl concept page

Signed-off-by: Matt Lord <mattalord@gmail.com>

content/en/docs/22.0/concepts/vtctl.md

@@ -2,8 +2,10 @@
 title: vtctl
 ---
 
-**vtctl** is a command-line tool used to administer a Vitess cluster. It is available as both a standalone tool (`vtctl`) and client-server (`vtctldclient` in combination with `vtctld`). Using client-server is recommended, as it provides an additional layer of security when using the client remotely.
+**vtctl** is a command-line tool, `vtctldclient`, that is used to administer a Vitess cluster. It is available as both a standalone tool (`vtctldclient --server=internal`) and client-server (`vtctldclient` in combination with `vtctld`). Using client-server is recommended, as it provides an additional layer of security when using the client remotely.
 
-Using vtctl, you can identify primary and replica databases, create tables, initiate failovers, perform resharding operations, and so forth.
+Using this you can identify primary and replica databases, create tables, initiate failovers, perform resharding operations, and so forth.
 
-As vtctl performs operations, the Topology Service is updated as needed. Other Vitess servers observe those changes and react accordingly. For example, if you use vtctl to fail over to a new primary database, vtgate sees the change and directs future write operations to the new primary.
+As it performs operations, the Topology Service is updated as needed. Other Vitess servers observe those changes and react accordingly. For example, if you use vtctl to fail over to a new primary database, vtgate sees the change and directs future write operations to the new primary.
+
+Please see the [reference documentation](../../reference/programs/vtctldclient/) for additional details.