Link Checker Improvements

[scottyhq]

We currently verify all links work with a GitHub Action workflow
https://github.com/snowex-hackweek/website/blob/main/.github/workflows/qaqc.yaml#L43-L57

Often there are failures having to do with checking certificates, such as (tutorials/geospatial/SNOTEL_query: line 20008) broken https://www.wcc.nrcs.usda.gov/snow/ - HTTPSConnectionPool(host='www.wcc.nrcs.usda.gov', port=443): Max retries exceeded with url: /snow/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1125)')))

Despite this error, the code or link does actually work.

@jomey pointed out that sphinx has the option to disable certificate verification here https://www.sphinx-doc.org/en/master/usage/configuration.html#confval-tls_verify , so this could be set in the jupyterbook configuration file https://jupyterbook.org/customize/config.html