Fix wording of sorted partition condition

Co-authored-by: Lilith Orion Hafner <lilithhafner@gmail.com>

Author: knuesel

base/sort.jl

@@ -301,7 +301,7 @@ equivalent to `x` (see below for the definition of equivalence).
 
 The range is found using binary search. The vector `v` must be sorted, or at
 least partitioned with respect to `x` such that all values that sort before `x`
-come first and all values that sort after `x` come last.
+are before `x` and all values that sort after `x` are after `x`.
 
 The `by`, `lt` and `rev` keywords modify what order is assumed for the data,
 as described in the [`sort!`](@ref) documentation.