Update social preview image in _config.yml

Author: syrex1013

_config.yml

@@ -100,7 +100,7 @@ avatar:
 
 # The URL of the site-wide social preview image used in SEO `og:image` meta tag.
 # It can be overridden by a customized `page.image` in front matter.
-social_preview_image: # string, local or CORS resources
+social_preview_image: "/assets/images/31669127.jpeg"
 
 # boolean type, the global switch for TOC in posts.
 toc: true