Thanks a lot @mortenpi ! That worked 
You could even define it as a function to reduce the boilerplate in the at-eval block.
Is it also possible to create a custom macro that one can call then instead of @eval? The use case would be to do, e.g., @_ref(StaticArrays.jl) inside a normal documentation text in order to workaround this limitation: How to use Markdown reference links with Documenter.jl…