fixes

docs/cmd/graph.md

@@ -4,11 +4,7 @@
 
 The `graph` command generates graphical representaitons of the deployed topology.
 
-Two graph styles are available, using [Graphviz](https://graphviz.org/) or using a HTML page generated by `containerlab` based on a Go html template.
-
-#### Graphviz
-
-PLACEHOLDER
+Two graphing options are available; using a HTML page generated by `containerlab` based on a Go html template, or using a [dot file](https://en.wikipedia.org/wiki/DOT_(graph_description_language)) that can visualized using [Graphviz](https://graphviz.org/)
 
 #### HTML
 
@@ -56,7 +52,13 @@ Within the template Javascript libraries such as  [**d3js directed force graph**
 
 After the graph generation, it allows to freely move the nodes to a desired position then export the graph in PNG format
 
-![default_graph](../images/html_topo.png)
+![default_graph](https://gitlab.com/rdodin/pics/-/wikis/uploads/5f3ade3559a5f044d4786bfd0e278b65/image.png)
+
+#### Graphviz
+
+When `graph` command is called without the `--srv` flag, containerlab will generate a [graph description file in dot format](https://en.wikipedia.org/wiki/DOT_(graph_description_language)).
+
+The dot file can be used to view the graphical representation of the topology either by rendering the dot file into a PNG file or using [online dot viewer](https://dreampuf.github.io/GraphvizOnline/).
 
 ### Usage
 
@@ -83,7 +85,7 @@ The `--template` flag allows to customize the HTML based graph by supplying a us
 
 ```bash
 
-# generate topo1 graph using Graphviz
+# generate a graph description file in dot format for topo1 topology
 containerlab graph --topo /path/to/topo1.yaml
 
 # start an http server on :3002 where topo1 graph will be rendered using the default template