fix(package): update @gridsome/remark-prismjs to version 0.2.0

Closes #6

Author: greenkeeper[bot]

package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@gridsome/plugin-google-analytics": "^0.1.0",
-    "@gridsome/remark-prismjs": "^0.0.6",
+    "@gridsome/remark-prismjs": "^0.2.0",
     "@gridsome/source-filesystem": "^0.3.0",
     "@gridsome/transformer-remark": "^0.2.0",
     "gridsome": "^0.5.0"