Correct the error in doc of workers() (JuliaLang/julia#40896)

zhaiyusci · web-flow · commit c3736ccaa9c3 · 2021-05-21T10:17:39.000+02:00
diff --git a/src/cluster.jl b/src/cluster.jl
@@ -851,7 +851,7 @@ julia> nprocs()
 3
 
 julia> workers()
-5-element Array{Int64,1}:
+2-element Array{Int64,1}:
  2
  3
 ```
