docs: fix link to page (#596)

* docs: fix link to page

Signed-off-by: Henry Schreiner <[email protected]>

* style: pre-commit fixes

---------

Signed-off-by: Henry Schreiner <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: henryiii

docs/pages/guides/packaging_classic.md

@@ -17,9 +17,9 @@ outlined as well.
 
 There are several popular packaging systems. This guide covers the old
 configuration style for [Setuptools][]. Unless you really need it, you should be
-using the modern style described in
-[Simple Packaging](/guides/packaging-simple/). The modern style is guided by
-Python Enhancement Proposals (PEPs), and is more stable than the
+using the modern style described in [Simple
+Packaging]({% link pages/guides/packaging_simple.md %}). The modern style is
+guided by Python Enhancement Proposals (PEPs), and is more stable than the
 setuptools-specific mechanisms that evolve over the years. This page is kept to
 help users with legacy code (and hopefully upgrade it).