all: fix mismatched symbols

all: fix mismatched symbols

There are some symbol mismatches in the comments, this commit attempts to fix them

Change-Id: I5c9075e5218defe9233c075744d243b26ff68496
Reviewed-on: https://go-review.googlesource.com/c/go/+/492996
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>