Update for new syntax.

Change-Id: Idc75066cfb2bb9fb3f30a35ac2080f2db25766cc
diff --git a/_config.yml b/_config.yml
index 2924447..1382c9c 100644
--- a/_config.yml
+++ b/_config.yml
@@ -7,7 +7,7 @@
 baseurl: "" # the subpath of your site, e.g. /blog/
 url: "http://twrp.me" # the base hostname & protocol for your site
 github_username: TeamWin
-gems: ['git', 'redcarpet']
+plugins: ['git', 'redcarpet']
 # Build settings
 markdown: redcarpet
 keep_files: [project, twrp_view_all_devices, officialota, datamedia, twrpfaq, whattobackup, whattowipe, securetwrp, removetwrp, noos, contactus/submit.php app/privacypolicy.pdf]