Setting "strict mode" in docs build throws error

[vikram-s-narayan]

We're getting an error ("ERROR: makedocs encountered an error (:docs_block, :example_block). Terminating build before rendering.") without being able to create the build directory when we make the following change in make.jl:

makedocs(
    sitename="Surrogates.jl",

    strict = [
             :doctest,
             :linkcheck,
             :parse_error,
             :example_block,
             # Other available options are
             # :autodocs_block, :cross_references, :docs_block, :eval_block, :example_block, :footnote, :meta_block, :missing_docs, :setup_block
         ],
         
    format = Documenter.HTML(analytics = "UA-90474609-3",
                         assets = ["assets/favicon.ico"],
                         canonical="https://surrogates.sciml.ai/stable/"),
    pages = pages
)

Each page in docs will need to be fixed independently in order to make these tests pass.

More context for this issue.