Revise issue template selection instructions

Updated instructions for attaching an issue template.

Author: arilivigni

.github/steps/3-step.md

@@ -25,10 +25,10 @@ Effective process evolution follows a lightweight cycle:
 
 _Use the following prompt in a new Copilot Space conversation:_
 
-- Select your repository and issue template
+- Select your repository
 
   > ```text
- > @{{full_repo_name}}
+ > {{full_repo_name}}
  > ```
 
 - Select the issue template to this new Copilot Space conversation. </br>