Update documentation for min and max with missing values (#48906)

With respect to #25403 , `min`
and `max` methods are supposed to return "missing" whenever we pass
"missing" value as one of the arguments, this PR updates the inline
documentation to reflect the same.

Author: bmharsha

base/operators.jl

@@ -464,27 +464,35 @@ cmp(x::Integer, y::Integer) = ifelse(isless(x, y), -1, ifelse(isless(y, x), 1, 0
 """
     max(x, y, ...)
 
-Return the maximum of the arguments (with respect to [`isless`](@ref)). See also the [`maximum`](@ref) function
-to take the maximum element from a collection.
+Return the maximum of the arguments, with respect to [`isless`](@ref).
+If any of the arguments is [`missing`](@ref), return `missing`.
+See also the [`maximum`](@ref) function to take the maximum element from a collection.
 
 # Examples
 ```jldoctest
 julia> max(2, 5, 1)
 5
+
+julia> max(5, missing, 6)
+missing
 ```
 """
 max(x, y) = ifelse(isless(y, x), x, y)
 
 """
     min(x, y, ...)
 
-Return the minimum of the arguments (with respect to [`isless`](@ref)). See also the [`minimum`](@ref) function
-to take the minimum element from a collection.
+Return the minimum of the arguments, with respect to [`isless`](@ref).
+If any of the arguments is [`missing`](@ref), return `missing`.
+See also the [`minimum`](@ref) function to take the minimum element from a collection.
 
 # Examples
 ```jldoctest
 julia> min(2, 5, 1)
 1
+
+julia> min(4, missing, 6)
+missing
 ```
 """
 min(x,y) = ifelse(isless(y, x), y, x)