Update foundation.html

Privacy link was broken.

Author: AmandaPerino

_pages/foundation.html

@@ -218,7 +218,7 @@ <h3>Suggestions?</h3>
         <p>Feel free to use <a href="https://app.todohelpers.com/forms/4758b5b0-d6f9-4f41-8041-992cc9b748fb">this suggestion form</a> to send us your ideas.</p>
 
         <hr class="divider" />
-        <p><a href="/privacy">Rails Foundation Privacy Policy</a>
+        <p><a href="/foundation/privacy">Rails Foundation Privacy Policy</a>
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