Leftover rst markup in the Compiler design internal document

[tomasr8]

Documentation

The Compiler design document contains some leftover rst markup, which was probably missed when the document was migrated from the dev guide:

cpython/InternalDocs/compiler.md

Lines 327 to 334 in 5e9e506

	.. code-block:: Python
	if x < 10:
	f1()
	f2()
	else:
	g()
	end()

The code block should be converted to use Markdown syntax.

Linked PRs

• gh-124962: Convert leftover rst to markup in InternalDocs/compiler.md #124971