link fixed in the API

API.md

@@ -18,7 +18,7 @@ A PID is a string chosen by the publisher and cannot be longer than 16 character
 
 All API requests must be issued with one special parameter `version` denoting the expected version of the API as  a string, e.g. `1.0` (see examples below). You should always put the version of this document as a `version` parameter.
 
-Once you obtained your PSK, you can test the API [here](/api-test.html).
+Once you obtained your PSK, you can test the API [here](http://notehub.org/api-test.html).
 
 ## <a name="registration"></a>NoteHub API Access Request
 To register as a publisher and gain access to NoteHub API, please [send](mailto:notehub@icloud.com?subject=NoteHub API Access Request&body=Please add [a] desired PID as a 16 char string [b] your contact information, [c] short usage explanation and [d] the URL of the resource or it's website.) an email with the following information about you: the desired PID, your contact information, a short description of what you want to do and an URL of the resource where the API will be used or its website.