Add Admonition plugin

Change-Id: Ib2607a9c9dc4072e7e36dee3b512758b2afa87c0
diff --git a/mkdocs.yml b/mkdocs.yml
index a68cb9f..2441058 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -1,3 +1,5 @@
 site_name: Team Bliss
 theme:
   name: 'material'
+markdown_extensions:
+  - admonition