Small title fix

kriomant · lambda-fairy · commit 1bc8a36a2f5b · 2016-09-27T16:01:35.000+13:00
diff --git a/idioms/pass-var-to-closure.md b/idioms/pass-var-to-closure.md
@@ -1,4 +1,4 @@
-# Pass variable to closure
+# Pass variables to closure
 
 ## Description
 
