tweak zipper

Signed-off-by: Jim Pryor <profjim@jimpryor.net>

diff --git a/zipper.mdwn b/zipper.mdwn
index 1db9e9a..5bdf345 100644 (file)
--- a/zipper.mdwn
+++ b/zipper.mdwn
@@ -183,7 +183,7 @@ How would we move upward in a tree? Well, we'd build a regular, untargetted tree
         /        |      \
        leaf 1  leaf 2  leaf 3
 
-We'll call this new untargetted tree `node 20`. The result of moving upward from our previous targetter tree, targetted on `leaf 1`, would be the outermost `parent` element of that targetted tree, with `node 20` being the subtree that filling that parent's target position `*`:
+We'll call this new untargetted tree `node 20`. The result of moving upward from our previous targetter tree, targetted on `leaf 1`, would be the outermost `parent` element of that targetted tree, with `node 20` being the subtree that fills that parent's target position `*`:
 
        {
           parent = ...;