Remove config engine lab example (#2002)

* remove config engine lab example

* remove the dead link

docs/cmd/graph.md

@@ -15,7 +15,7 @@ The following graphing options are available:
 
 The HTML-based graph representation is the default graphing option. The topology will be graphed and served online using the embedded web server.
 
-The default graph template is based on the [NeXt UI](https://developer.cisco.com/site/neXt/) framework[^2].
+The default graph template is based on the NeXt UI framework[^2].
 
 ![animation](https://user-images.githubusercontent.com/11521160/155654224-d46b346d-7051-49f8-ba93-6dee6d22a39f.gif)
 

docs/rn/0.19.md

@@ -1,7 +1,9 @@
 # Release 0.19
+
 :material-calendar: 2021-10-03
 
 ## Containerlab container
+
 In this release our build pipeline finally started to produce [container images with containerlab inside](../install.md#container).
 
 This allows you to use containerlab on systems that have container runtime installed without requiring any installation whatsoever.
@@ -11,9 +13,11 @@ Yes, a container with containerlab inside, so that you can launch containers fro
 <div style="width:50%;height:0;padding-bottom:30%;position:relative;"><iframe src="https://giphy.com/embed/7pHTiZYbAoq40" width="100%" height="100%" style="position:absolute" frameBorder="0" class="giphy-embed" allowFullScreen></iframe></div>
 
 ## Experimental vQFX support
+
 With the help of [@chriscummings-esnet](https://github.com/chriscummings-esnet) we added [experimental support for Juniper vQFX](../manual/kinds/vr-vqfx.md) images built with vrnetlab. It may be rough around the edges, but should be a good start for future enhancements and improvements.
 
 ## Mysocket support for HTTP proxies
+
 Our famous [mysocketio integration](../manual/published-ports.md) that allows you to share labs effortlessly and secure has been enhanced with proxy support.
 
 With HTTP proxy support it is now possible to share lab access in the environments that have external SSH access blocked.
@@ -24,6 +28,7 @@ With HTTP proxy support it is now possible to share lab access in the environmen
 * The [5 stage Clos](../lab-examples/min-5clos.md) lab example has been extended with a [full blown configuration](../lab-examples/min-5clos.md#configuration-setup) of the fabric using gnmic as a vehicle to push configs to all the nodes of this lab.
 
 ## New contributors
+
 Welcome [@chriscummings-esnet](https://github.com/chriscummings-esnet), [@sacckth](https://github.com/sacckth), [@siva19susi](https://github.com/siva19susi), [@marcosfsch](https://github.com/marcosfsch) and thank you for your contributions to containerlab!
 
 ## Patches
@@ -40,4 +45,4 @@ Welcome [@chriscummings-esnet](https://github.com/chriscummings-esnet), [@sacckt
 
 * fixed `tools veth create` command #667
 * fixed `save` command for `vr-csr` nodes
-* added [config engine example](../lab-examples/cfg-clos.md)
+* added config engine example (has been sunsetted in the course of 0.54.2+)