Merge pull request addthis#104 from bobpoekert/patch-1

Update link in comment to not be broken

Author: abramsm

src/main/java/com/clearspring/analytics/stream/frequency/CountMinSketch.java

@@ -28,7 +28,7 @@
 /**
  * Count-Min Sketch datastructure.
  * An Improved Data Stream Summary: The Count-Min Sketch and its Applications
- * http://www.eecs.harvard.edu/~michaelm/CS222/countmin.pdf
+ * https://web.archive.org/web/20060907232042/http://www.eecs.harvard.edu/~michaelm/CS222/countmin.pdf
  */
 public class CountMinSketch implements IFrequency {