Editing an issue title
You can edit an issue's title. The change to the title is added to the issue's timeline.
-  Navigate to the issue you want to edit. 
-  To the right of the issue title, click Edit.  
-  Type your new title. 
-  Click Save. 
Editing an issue description
You can also make changes to the issue description. The edit history is available unless the author or a person with write access removes it. See Tracking changes in a comment.
-  Navigate to the issue you want to edit. 
-  At the top right of the issue description, click .  
-  In the menu, click Edit. 
-  Type your changes to the issue description. 
-  Click Save.