Update make.jl

Author: ChrisRackauckas

docs/make.jl

@@ -23,7 +23,10 @@ makedocs(sitename = "Overview of Julia's SciML",
          clean = true, doctest = false, linkcheck = true,
          linkcheck_ignore = ["https://twitter.com/ChrisRackauckas/status/1477274812460449793",
                              "https://epubs.siam.org/doi/10.1137/0903023",
-                             "https://bkamins.github.io/julialang/2020/12/24/minilanguage.html"],
+                             "https://bkamins.github.io/julialang/2020/12/24/minilanguage.html",
+                             "https://arxiv.org/abs/2109.06786",
+    
+    ],
          format = Documenter.HTML(assets = ["assets/favicon.ico"],
                                   canonical = "https://docs.sciml.ai/stable/",
                                   mathengine = mathengine),