update examples used in tasks docs

Author: wvandeun

Diff for: docs/docs/references/plugins/artifact_tasks.mdx

@@ -36,7 +36,7 @@ def main():
     eos_devices = nr.filter(platform="eos")
 
     # regenerate an artifact for a host
-    print_result(eos_devices.run(task=regenerate_host_artifact, artifact="Startup Config for Edge devices"))
+    print_result(eos_devices.run(task=regenerate_host_artifact, artifact="startup-config"))
 
     return 0
 
@@ -121,7 +121,7 @@ def main():
 
     eos_devices = nr.filter(platform="eos")
     # retrieves the artifact for all the hosts in the inventory
-    result = eos_devices.run(task=get_artifact, artifact="Startup Config for Edge devices")
+    result = eos_devices.run(task=get_artifact, artifact="startup-config")
     print_result(result)
 
     return 0