To change the "Websites for Photographers", visit "Setttings->All In One SEO".
This line will be in the "Title" area. Change that to be the main term you want to be found for. It is a good idea to start with your city or county then a couple words about what you do. Example "Los Angeles Portrait Photographer" you might also include your name or studio name but that should be second, something like "Los Angeles Portrait Photographer – My Photography Studio". Maybe 8-10 words at the most.
You will also want to update the "Description" box. This should be one to two sentences that spell out what you do. About 160 characters at the most.