removing `v0.1` and linking `v0.1` to `v0.1.1`.

removing `stable` and linking `stable` to `v0.1.1`.

Unexpected Julia interpolation in the Markdown. This probably means that you have an unbalanced or un-escaped $ in the text. To write the dollar sign, escape it with `\$` We don't have the file or line number available, but we got given the value: `$(Expr(:incomplete, Base.Meta.ParseError("ParseError:\n# Error @ none:1:3\n\".\n# └ ── unterminated string literal", Base.JuliaSyntax.ParseError(Base.JuliaSyntax.SourceFile("\".", 0, "none", 1, [1, 3]), Base.JuliaSyntax.Diagnostic[Base.JuliaSyntax.Diagnostic(3, 2, :error, "unterminated string literal")], :string))))` which is of type `Expr`

Unable to determine the repository root URL for the navbar link. This can happen when a string is passed to the `repo` keyword of `makedocs`. To remove this warning, either pass a Remotes.Remote object to `repo` to completely specify the remote repository, or explicitly set the remote URL by setting `repolink` via `makedocs(format = HTML(repolink = "..."), ...)`.