Remove reference to email address from code block

Hello - really enjoying learning and using WebPageTest.

I noticed Email address was not actually included in the curl code block? I got confused for a second re-reading it. I propose removing it, if that is the case.

Author: airbr

src/api/index.md

@@ -18,7 +18,7 @@ If you can't see any API Keys, that means you don't currently have any and you w
 ## 2. Submit your first test
 To make sure your API key is ready to go, let's get your first test submitted. It takes some time for a test to complete.
 
-Copy and paste the following command into your terminal, inserting your api key and email address in place of the placeholders:
+Copy and paste the following command into your terminal, inserting your api key in place of the placeholders:
 
 ```bash
 curl https://www.webpagetest.org/runtest.php?url=https://www.webpagetest.org&k={YOUR_API_KEY}&f=json
@@ -57,4 +57,4 @@ Congratulations! You've just successfully submitted your first test using the We
 
 - Dig deeper into the [API reference guide](/api/reference/) to see what parameters are available to you
 - Check out some of the [existing integrations built around WebPageTest](/integrations/) from both the WebPageTest team as well [as the WebPageTest community](/integrations/#officially-supported-integrations)
-- View [our collection of common API recipes](https://github.com/WebPageTest/WebPageTest-API-Recipes) (using the Node.js wrapper)
+- View [our collection of common API recipes](https://github.com/WebPageTest/WebPageTest-API-Recipes) (using the Node.js wrapper)