Ho to Change Author ID from SharePoint list to names in Power BI?

Here is the detail level steps.

Step-1: Connect to the SharePoint List.

Step-2: Click on "Edit Queries"

Step-3: Click "Choose Columns"

Step-4: Choose your columns and "Author"

Step-5: Click on symbol given as shown in the image

Step-6: Choose the column "Title"

And now you will have your name.

Let me know if you need any additional details.