Adding LinkedIn

Author: pecey

_config.yml

@@ -67,7 +67,7 @@ github_username: pecey #your GitHub user name
 gitlab_username: # your GitLab user name
 twitter_username: # your Twitter handle
 mastodon_username: # your mastodon instance+username in the format instance.tld/@username
-linkedin_username: # your LinkedIn user name
+linkedin_username: palashchatterjee # your LinkedIn user name
 telegram_username: # your Telegram user name
 scholar_userid: # your Google Scholar ID
 semanticscholar_id: # your Semantic Scholar ID