Update index.md

plans/Manhattan/Tompkins Square/index.md

@@ -10,3 +10,4 @@ published: true
 The Tompkins Square plan was adopted in 1960, last revised in 1962, and expired in 2000. It calls for clearance and redevelopment for residential, retail commercial, public and semi-public use, and street widenings in the plan area.
 
 See [References](http://www.urbanreviewer.org/#page=references.html).
+https://www.nyc.gov/site/hpd/services-and-information/urban-renewal-details.page?areaId=44