edits in task name

Author: bhushan-nemade-dt

docs/user-guide/plugins/cosign.md

@@ -29,7 +29,7 @@ If you have already configured workflow, edit the build pipeline, and navigate t
 ### Task Name
 Enter the name of your task
 
-e.g., `Signing the Docker image`
+e.g., `Signing of container images`
 
 ### Description
 Add a brief explanation of the task and the reason for choosing the plugin. Include information for someone else to understand the purpose of the task.