[w3c/payment-method-id] Updated the link to the test-suit (#55)

This PR updates the "test-suite" link at the top of the spec to point to the new test suite location. 

This is in context with #54


<!--
    This comment and the below content is programatically generated.
    You may add a comma-separated list of anchors you'd like a
    direct link to below (e.g. #idl-serializers, #idl-sequence):

    Don't remove this comment or modify anything below this line.
    If you don't want a preview generated for this pull request,
    just replace the whole of this comment's content by "no preview"
    and remove what's below.
-->
***
<a href="https://pr-preview.s3.amazonaws.com/yatri1609/payment-method-id/pull/55.html" title="Last updated on Sep 27, 2018, 2:06 PM GMT (2559e85)">Preview</a> | <a href="https://pr-preview.s3.amazonaws.com/w3c/payment-method-id/55/14f2321...yatri1609:2559e85.html" title="Last updated on Sep 27, 2018, 2:06 PM GMT (2559e85)">Diff</a>
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/payment-method-id/pull/55

-- Commit Summary --

  * Updated the link to the test-suit

-- File Changes --

    M index.html (2)

-- Patch Links --

https://github.com/w3c/payment-method-id/pull/55.patch
https://github.com/w3c/payment-method-id/pull/55.diff

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/payment-method-id/pull/55