index.html error 발생

Author: 김용환

_config.yml

@@ -19,7 +19,7 @@ title: cylanokim's blog # the main title
 tagline: Always in back-propagation. # it will display as the subtitle
 
 description: >- # used by seo meta and the atom feed
-  always in back-propagation
+  always in back-propagation.
 
 # Fill in the protocol & hostname for your site.
 # E.g. 'https://username.github.io', note that it does not end with a '/'.