fixed sed command syntax and removed commented code

main.tf

@@ -152,8 +152,7 @@ resource "null_resource" "ops" {
 
 provisioner "remote-exec" {
     inline = [
-      "sudo sed -i -E 's/(ServerName ).*/\1xdmod.rc.uab.edu/' /etc/httpd/conf.d/xdmod.conf"
-      #'sudo sed -i -E "s/(ServerName: ).*/\1xdmod.rc.uab.edu/" /etc/httpd/conf.d/xdmod.conf'
+      "sudo sed -i -E 's/(ServerName ).*/\\1xdmod.rc.uab.edu/' /etc/httpd/conf.d/xdmod.conf"
    ]
   }