Base URL mismatch

[github-actions]

check-base-url has detected that the base URL (i.e. the one that appears in the root url property in index.json) of the following specifications does not match the release URL or the nightly URL:

• Element Timing API: expected nightly URL https://wicg.github.io/element-timing/ to match base URL https://w3c.github.io/element-timing/

Please review the above list. For each specification, consider updating the URL in specs.json or fixing the info at the source (the W3C API, Specref, or the spec itself). If the discrepancy seems warranted, the specification should be hardcoded as an exception to the rule in the check-base-url script.

[tidoust]

Fixed in latest release, also see #1633.