Update index.md

plans/Brooklyn/Freeman Street/index.md

@@ -6,4 +6,4 @@ published: true
 
 The Freeman Street plan was adopted in 1988 and will expire in 2028. It provides for new low-rise, low-density housing on the site.
 
-See [References](http://www.urbanreviewer.org/#page=references.html).
+[NYC Housing Preservation and Development, Freeman Street Community Development Plan (1987).](https://www.nyc.gov/assets/hpd/downloads/pdfs/services/freeman-street-urp.pdf)