Fixed typo in warning/disclaimer.

index.html

@@ -27,7 +27,7 @@
        <h2>Notice</h2>
        <p class="notice">
            This was purely created for experimentating with AngularJS. Sometimes the callbacks receive an HTTP error code of 500 from the servers. Just wait a second if this is the case and try again.
            This was purely created for experimentation with AngularJS. Sometimes the callbacks receive an HTTP error code of 500 from the servers. Just wait a second if this is the case and try again.
        </p>
        <hr />