cmd/doc: fix inconsistent receiver name
The ToText method of Package is the only one with a receiver declared
'p'; all the rest have 'pkg'. Fix it to be consistent.
Change-Id: I2b47c719f4f6f8d87336316b7f80deb1b49e17dc
GitHub-Last-Rev:
7d273b4ef0780b7ed8b651c117a28b25bab5bcb1
GitHub-Pull-Request: golang/go#64912
Reviewed-on: https://go-review.googlesource.com/c/go/+/553335
Run-TryBot: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>