errors: clarify references to Unwrap in doc
CL 535080 incorrectly links the unclear mention of Unwrap to the func
Unwrap in doc for errors.Is and errors.As
Instead we clarify that "Unwrap" is a reference
to the "Unwrap() error" or "Unwrap() []error" methods, not to the
"Unwrap(error) error" function which is also available in the package.
Change-Id: I8314993932e1e7a2dc77400f74d81f3a8aa891de
Reviewed-on: https://go-review.googlesource.com/c/go/+/538155
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: qiulaidongfeng <
2645477756@qq.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>