Modify the text from "Create a new wiki"

Steps to reproduce:

1. Click on "Add - Wiki"
2. Add a name for your wiki
3. "Step 2" from "Create a new wiki"
4. See the "Info message"
   1. First of all, the "create" word is not capitalized, on button, "Create" is capitalized
   2. Second, you can add "button" near the "create" word for more accuracy