resources, yamlgraph: Drop the kind capitalization

This stopped making sense now that we have a resource with two primary
capitals. It was just a silly formatting hack anyways. Welcome kv!

resources/virt.go

@@ -191,7 +191,7 @@ func (obj *VirtRes) Init() error {
 		}
 	}
 	obj.wg = &sync.WaitGroup{}
-	obj.BaseRes.kind = "Virt"
+	obj.BaseRes.kind = "virt"
 	return obj.BaseRes.Init() // call base init, b/c we're overriding
 }