[issue35521] IDLE: Add doc section for Code Conext

Change by Cheryl Sabella : -- keywords: +patch pull_requests: +10442 stage: -> patch review ___ Python tracker ___ ___ Python-bugs-

[issue35521] IDLE: Add doc section for Code Conext

New submission from Cheryl Sabella : Item D1 from #33610. D1: idle.rst subsection on Code Context -- assignee: terry.reedy components: IDLE messages: 332032 nosy: cheryl.sabella, terry.reedy priority: normal severity: normal status: open title: IDLE: Add doc section for Code Conext typ