Upgrade remark packages to support no-duplicate-headers-in-section rule

Author: Jeremy Wiebe

package.json

@@ -16,11 +16,11 @@
   },
   "homepage": "https://github.com/mobify/mobify-code-style",
   "scripts": {
-    "test": "bash docs/test/test.sh"
+    "test": "cd docs/test; bash test.sh"
   },
   "dependencies": {
-    "remark-cli": "2.0.0",
-    "remark-lint": "5.0.1",
+    "remark-cli": "2.1.0",
+    "remark-lint": "5.2.0",
     "remark-preset-lint-recommended": "1.0.0"
   }
 }