Turn off doctests while building docs

The doctests never run while building the docs because of the pinned
julia version; hence, they currently are switched off indirectly. For
more information see - FluxML/Flux.jl#1914

Author: Saransh-cpp

docs/make.jl

@@ -3,7 +3,7 @@ using Documenter, Functors
 DocMeta.setdocmeta!(Functors, :DocTestSetup, :(using Functors); recursive = true)
 
 makedocs(modules = [Functors],
-         doctest = VERSION == v"1.6",
+         doctest = false,
          sitename = "Functors.jl",
          pages = ["Home" => "index.md",
                   "API" => "api.md"],