Fix #39367, doc for inbounds use each index (#39369)

mbauman · web-flow · commit f31ef767ef9c · 2021-01-25T15:06:01.000-05:00
diff --git a/base/essentials.jl b/base/essentials.jl
@@ -540,7 +540,7 @@ element `i` of array `A` is skipped to improve performance.
 ```julia
 function sum(A::AbstractArray)
     r = zero(eltype(A))
-    for i = 1:length(A)
+    for i in eachindex(A)
         @inbounds r += A[i]
     end
     return r
