You can put it under "Other Miscellaneous Expenses" and label it Web Hosting. Here's how:
1. Click on the Business tab, and then on Continue
2. Click "I'll choose what I work on"
3. Select Start or Update next to Business Income and Expenses
4. Either edit or add your business information
5. Scroll down to Business Expenses and then click on Start or Update on Other Common Business Expenses. You will see "Other Miscellaneous Expenses" in that list.