Update _config.yml

_config.yml

@@ -15,9 +15,9 @@ google_scholar_stats_use_cdn : true
 google_analytics_id      :  get google_analytics_id from https://analytics.google.com/analytics/
 
 # SEO Related
-google_site_verification :  # get google_site_verification from https://search.google.com/search-console/about
-bing_site_verification   :  # get bing_site_verification from https://www.bing.com/webmasters/about
-baidu_site_verification  :  # get baidu_site_verification from https://ziyuan.baidu.com/login/index?u=/site/index
+google_site_verification :   get google_site_verification from https://search.google.com/search-console/about
+bing_site_verification   :   get bing_site_verification from https://www.bing.com/webmasters/about
+baidu_site_verification  :   get baidu_site_verification from https://ziyuan.baidu.com/login/index?u=/site/index
 
 # Site Author
 author:
@@ -48,7 +48,7 @@ author:
   orcid            : # e.g., "https://orcid.org/xxxx"
   pinterest        :
   soundcloud       :
-  stackoverflow    : # http://stackoverflow.com/users/123456/username
+  stackoverflow    : https://stackoverflow.com/users/26792039/mengyu-nan
   steam            :
   tumblr           :
   twitter          :