`edit_link` cannot be `nothing`

[ValentinKaisermayer]

In the docs it says:

edit_link::Union{AbstractString, Symbol, Nothing}: Branch, tag or commit that the "Edit on…" link will point to. Defaults to the branch identified by devbranch. If edit_link=:commit, then the link will point to the latest commit when docs are built. If edit_link=nothing, then the "Edit on…" link will be hidden altogether.

However, here: https://github.com/JuliaCI/PkgTemplates.jl/blob/a775fe585593e9ea5c974bc62873d1c2ac9edf28/src/plugins/documenter.jl#L154

I get:

MethodError: no method matching _quoted(::Nothing)