Update README link in development.md (#29166)

Co-authored-by: Jess Hosman <1183847+jhosman@users.noreply.github.com>

contributing/development.md

@@ -71,8 +71,4 @@ For more info about working with this site, check out these READMEs:
 - [data/variables/README.md](../data/variables/README.md)
 - [src/content-render/README.md](src/content-render/README.md)
 - [includes/README.md](../includes/README.md)
-<!-- The following will be moved into src directory over time: -->
+- [src/README.md](src/README.md)
-- [components/README.md](../components/README.md)
-- [middleware/README.md](../middleware/README.md)
-- [script/README.md](../script/README.md)
-- [tests/README.md](../tests/README.md)