Remove extra "/" from URL

Co-authored-by: Mike Ralphson <[email protected]>

Author: handrews

registry/index.md

@@ -15,7 +15,7 @@ Please raise a [Pull-Request](https://github.com/OAI/OpenAPI-Specification/pulls
 #### API access
 
 * [registries.json](./api/registries.json) - Registries meta-registry
-{% for registry in site.collections %}{% unless registry.hidden %}* <a href="..//api/{{ registry.slug }}.json">{{ registry.slug }}.json</a>{% endunless %}
+{% for registry in site.collections %}{% unless registry.hidden %}* <a href="../api/{{ registry.slug }}.json">{{ registry.slug }}.json</a>{% endunless %}
 {% endfor %}
 
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