doc/go1.20: fix URL anchor
The URL anchor was invalid. Add the missing "array_or_" part.
Change-Id: Ib27f4d0f21b0148bea8b63ef962ba0ea30166ed3
GitHub-Last-Rev:
f8addc607812290ebbdbb1560f336f56390d0d8d
GitHub-Pull-Request: golang/go#57154
Reviewed-on: https://go-review.googlesource.com/c/go/+/456175
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>