Fix nit nginx conf comment

ansible/roles/nginx_site_config/templates/tildes.conf.jinja2

@@ -19,7 +19,7 @@ map $request_uri $csp_header {
     # - "https://js.stripe.com" in script-src and frame-src is needed for Stripe
     "~^/donate_stripe$" "default-src 'none'; script-src 'self' https://js.stripe.com; style-src 'self'; img-src 'self' data:; connect-src 'self'; manifest-src 'self'; frame-src 'self' https://js.stripe.com; form-action 'self'; frame-ancestors 'none'; base-uri 'none'";
     # The CSP for the OpenAPI (Swagger) UI page:
-    # - "https://cdnjs.cloudflare.com" in script-src and style-src is needed for Swagger UI
+    # - "https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/" in script-src and style-src is needed for Swagger UI
     "~^/api/beta/ui$" "default-src 'none'; script-src 'self' https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/; style-src 'self' https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/; img-src 'self' data:; connect-src 'self'; manifest-src 'self'; form-action 'self'; frame-ancestors 'none'; base-uri 'none'";
 }