add new redirect

Author: LWinterberg

public/_redirects

@@ -60,6 +60,7 @@
 /about/screenshots/	/FAQ#features
 /about/nyquist/	https://audacity.gitbook.io/dev/scripting/creating-your-own-nyquist-plugins
 /about/news/	/blog
+/about/voluntary-product-accessibility-template/ VPAT.pdf
 /download/online-safety-when-downloading/	/FAQ#is-audacity-safe-to-download
 /download/source/	/download
 /download/legacy-windows/	/download/windows