doc/go1.20: fix links to new strings functions
Links under strings package were linking to the bytes versions of the functions.
Change-Id: If6ebe37fede8e417f8683695783aa767bc01e9c7
GitHub-Last-Rev:
8849285122cb58c17b5979144649075861d8a134
GitHub-Pull-Request: golang/go#57579
Reviewed-on: https://go-review.googlesource.com/c/go/+/460458
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>