Hi There Add Following in .htaccess will fix it
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
FOR SPECIFIC DOMAIN:
RewriteEngine On
RewriteCond %{HTTP_HOST} ^yourdomain1.com [NC]
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]