Need help in displaying the URL in the Table

[if this is not right forum appreciate if you direct me to the right one]
Hello, I am new to Grafana.

What am I doing?
I have go client which polls the apis and publishes the histogram metrics to prometheus server.
I use grafana to display the metrics info using a table.
What I want to do?
How can I display the api (URL) information instead of the following histogram title as shown in the attached file?