code_warntype docs: more neutral reference to @code_warntype (#51361)

fix #51358

---------

Co-authored-by: Fredrik Ekre <ekrefredrik@gmail.com>
Co-authored-by: Max Horn <max@quendi.de>
(cherry picked from commit 5cb5cd8)

stdlib/InteractiveUtils/src/codeview.jl

@@ -70,7 +70,7 @@ Small unions of concrete types are usually not a concern, so these are highlight
 
 Keyword argument `debuginfo` may be one of `:source` or `:none` (default), to specify the verbosity of code comments.
 
-See [`@code_warntype`](@ref man-code-warntype) for more information.
+See the [`@code_warntype`](@ref man-code-warntype) section in the Performance Tips page of the manual for more information.
 """
 function code_warntype(io::IO, @nospecialize(f), @nospecialize(t=Base.default_tt(f));
                        debuginfo::Symbol=:default, optimize::Bool=false, kwargs...)