_config.yml: add link to kramdown options

Signed-off-by: Joachim Wiberg <[email protected]>

Author: troglobit

_config.yml

@@ -152,8 +152,9 @@ paginate: 10
 baseurl: ""
 
 # ------------ The following options are not recommended to be modified ------------------
-
+# For details, see https://github.com/kramdown/parser-gfm
 kramdown:
+  gfm_quirks: paragraph_end
   footnote_backlink: "↩︎"
   syntax_highlighter: rouge
   syntax_highlighter_opts: # Rouge Options › https://github.com/jneen/rouge#full-options