doc: summary of output functions: cross-ref println and printstyled (#55860)

Slight tweak to #54547 to add cross-referenes to `println` and
`printstyled`.

Co-authored-by: Dilum Aluthge <dilum@aluthge.com>

Author: stevengj

doc/src/manual/types.md

@@ -1595,7 +1595,7 @@ Most new types should only need to define `show` methods, if anything.
 * [`display(x)`](@ref) tells the current environment to display `x` in whatever way it thinks best. (This might even be a graphical display in something like a Jupyter or Pluto notebook.) By default (e.g. in scripts or in the text REPL), it calls `show(io, "text/plain", x)`, or equivalently `show(io, MIME"text/plain"(), x)`, for an appropriate `io` stream. (In the REPL, `io` is an [`IOContext`](@ref) wrapper around [`stdout`](@ref).) The REPL uses `display` to output the result of an evaluated expression.
 * The 3-argument [`show(io, ::MIME"text/plain", x)`](@ref) method performs verbose pretty-printing of `x`. By default (if no 3-argument method is defined for `typeof(x)`), it calls the 2-argument `show(io, x)`. It is called by the 2-argument `repr("text/plain", x)`. Other 3-argument `show` methods can be defined for additional MIME types as discussed above, to enable richer display of `x` in some interactive environments.
 * The 2-argument [`show(io, x)`](@ref) is the default simple text representation of `x`. It is called by the 1-argument [`repr(x)`](@ref), and is typically the format you might employ to input `x` into Julia. The 1-argument `show(x)` calls `show(stdout, x)`.
-* [`print(io, x)`](@ref) by default calls `show(io, x)`, but a few types have a distinct `print` format — most notably, when `x` is a string, `print` outputs the raw text whereas `show` outputs an escaped string enclosed in quotation marks. The 1-argument `print(x)` calls `print(stdout, x)`. `print` is also called by [`string(x)`](@ref).
+* [`print(io, x)`](@ref) by default calls `show(io, x)`, but a few types have a distinct `print` format — most notably, when `x` is a string, `print` outputs the raw text whereas `show` outputs an escaped string enclosed in quotation marks. The 1-argument `print(x)` calls `print(stdout, x)`. `print` is also called by [`string(x)`](@ref).  See also [`println`](@ref) (to append a newline) and [`printstyled`](@ref) (to add colors etc.), both of which call `print`.
 * [`write(io, x)`](@ref), if it is defined (it generally has *no* default definition for new types), writes a "raw" binary representation of `x` to `io`, e.g. an `x::Int32` will be written as 4 bytes.
 
 It is also helpful to be familiar with the metadata that can be attached to an `io` stream by an [`IOContext`](@ref) wrapper. For example, the REPL sets the `:limit => true` flag from `display` for an evaluated expression, in order to limit the output to fit in the terminal; you can query this flag with `get(io, :limit, false)`. And when displaying an object contained within, for example, a multi-column matrix, the `:compact => true` flag could be set, which you can query with `get(io, :compact, false)`.