chore(package): update markdown-it-decorate to version 1.2.1

http://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -12,7 +12,7 @@
     "highlight.js": "9.0.0",
     "lodash": "3.10.1",
     "markdown-it": "5.0.2",
-    "markdown-it-decorate": "1.2.0",
+    "markdown-it-decorate": "1.2.1",
     "marked": "0.3.5",
     "metalsmith": "2.1.0",
     "slugify": "0.1.1",