fixed the broken link for wikipedia
diff --git a/asterix-doc/src/site/markdown/aql/allens.md b/asterix-doc/src/site/markdown/aql/allens.md
index e83e319..e4d83f0 100644
--- a/asterix-doc/src/site/markdown/aql/allens.md
+++ b/asterix-doc/src/site/markdown/aql/allens.md
@@ -4,7 +4,7 @@
AsterixDB supports Allen's relations over interval types. Allen's relations are also called Allen's interval algebra. There are totally 13 base relations described by this algebra, and all of them are supported in AsterixDB (note that `interval-equals` is supported by the `=` comparison symbol so there is no extra function for it).
-A detailed description of Allen's relations can be found from its [wikipedia entry](http://http://en.wikipedia.org/wiki/Allen's_interval_algebra).
+A detailed description of Allen's relations can be found from its [wikipedia entry](http://en.wikipedia.org/wiki/Allen's_interval_algebra).
## Allen's Relations Functions ##