bpo-31458: Clarify that Changelog is built from Misc/NEWS.d directory…

bpo-31458: Clarify that Changelog is built from Misc/NEWS.d directory… · python/cpython@d3cba81

Original file line number	Diff line number	Diff line change
`@@ -27,8 +27,10 @@ anyone wishing to stay up-to-date after a new release.`
`27`	`27`	`2.1.rst`
`28`	`28`	`2.0.rst`
`29`	`29`
`30`		-The "Changelog" is a HTML version of the file :source:`Misc/NEWS.d` which
`31`		`-contains all nontrivial changes to Python for the current version.`
	`30`	+The "Changelog" is an HTML version of the `file built
	`31`	+<https://pypi.org/project/blurb>`_ from the contents of the
	`32`	+:source:`Misc/NEWS.d` directory tree, which contains all nontrivial changes
	`33`	`+to Python for the current version.`
`32`	`34`
`33`	`35`	`.. toctree::`
`34`	`36`	`:maxdepth: 2`