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@0ec8c4b

Original file line number	Diff line number	Diff line change
`@@ -28,8 +28,10 @@ anyone wishing to stay up-to-date after a new release.`
`28`	`28`	`2.1.rst`
`29`	`29`	`2.0.rst`
`30`	`30`
`31`		-The "Changelog" is a HTML version of the file :source:`Misc/NEWS.d` which
`32`		`-contains all nontrivial changes to Python for the current version.`
	`31`	+The "Changelog" is an HTML version of the `file built
	`32`	+<https://pypi.org/project/blurb>`_ from the contents of the
	`33`	+:source:`Misc/NEWS.d` directory tree, which contains all nontrivial changes
	`34`	`+to Python for the current version.`
`33`	`35`
`34`	`36`	`.. toctree::`
`35`	`37`	`:maxdepth: 2`