[prezto] Update syntax highlighting
change
commit f1196f009d20cfb55a86e86c5207be78541bbd9e
author Alpha Chen <alpha.chen@gmail.com>
date
parent 6ffe14f5 
diff --git a/src/prezto b/src/prezto
index bf31568e..4ab47c59 160000
--- a/src/prezto
+++ b/src/prezto
@@ -1 +1 @@
-Subproject commit bf31568e678734dee2ab03872d0f564d5601bcda
+Subproject commit 4ab47c597a0b89212d22028b29da991f29dafd8a