math.matrices: fix using in docs

diff --git a/basis/math/matrices/matrices-docs.factor b/basis/math/matrices/matrices-docs.factor
index 0554f7797cf14ab3a452e78e65a736f250291212..7cd9494bf2a5483b6d207c8081f66f65f438a246 100644 (file)
--- a/basis/math/matrices/matrices-docs.factor
+++ b/basis/math/matrices/matrices-docs.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2005, 2010, 2018, 2020 Slava Pestov, Joe Groff, and Cat Stevens.
 USING: arrays assocs help.markup help.markup.private help.syntax
 kernel math math.functions math.order math.vectors sequences
-sequences.generalizations ;
+sequences.generalizations urls ;
 IN: math.matrices
 
 <PRIVATE