Update wiki link in README.md

README.md

@@ -4,4 +4,4 @@
 
 Since most interactions only involve a single dimension, and then only small adjustments are made to the filter values, incremental filtering and reducing is significantly faster than starting from scratch. Crossfilter uses sorted indexes (and a few bit-twiddling hacks) to make this possible, dramatically increasing the perfor­mance of live histograms and top-K lists. Crossfilter is available under the [Apache License](/square/crossfilter/blob/master/LICENSE).
 
-Want to learn more? [See the wiki.](https://github.com/square/crossfilter/wiki)
+Want to learn more? [See the wiki.](https://github.com/crossfilter/crossfilter/wiki)