feat: add markdown plugins

pelicanconf.py

@@ -2,6 +2,16 @@
 # -*- coding: utf-8 -*- #
 from __future__ import unicode_literals
 
+MARKDOWN = {
+    'extension_configs': {
+        'markdown.extensions.codehilite': {'css_class': 'highlight'},
+        'markdown.extensions.extra': {},
+        'markdown.extensions.meta': {},
+        'markdown.extensions.fenced_code': {},
+    },
+    'output_format': 'html5',
+}
+
 SITENAME = 'Xieme-Art'
 SITEURL = 'https://xieme-art.org'
 SITESUBTITLE = """