Fix Liu citation, make Stacks URL clickable (#3567)

src/AlgebraicGeometry/Schemes/CoveredSchemes/Objects/Methods.jl

@@ -170,8 +170,9 @@ A triple ``(Y, \nu\colon Y \to X, \mathrm{injs})`` where ``Y`` is a
 normal scheme, ``\nu`` is the normalization, and ``\mathrm{injs}`` is a
 vector of inclusion morphisms ``ı_i\co Y_i \to Y``, where ``Y_i`` are
 the connected components of the scheme ``Y``.
-See `https://stacks.math.columbia.edu/tag/0CDV` in [Stacks](@cite) or
-Definition 5.1 in [Liu06](@cite) for normalization.
+See [Tag 0CDV](https://stacks.math.columbia.edu/tag/0CDV) in
+[Stacks](@cite) or Definition 7.5.1 in [Liu06](@cite) for normalization
+of non-integral schemes.
 
 # Examples
 ```jldoctest