Make .sha256 checksum files available at https://golang.org/dl

[lazyhacker]

What version of Go are you using (go version)?

1.15

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

N/A

What did you do?

Tried to download .sha256 checksum file from https://golang.org/dl (e.g. https://golang.org/dl/go1.15.1.linux-amd64.tar.gz.sha256).

What did you expect to see?

The checksum file is available to download.

What did you see instead?

File not found. Have to go to https://dl.google.com/go to download the file.

Since the binary can be downloaded from golang.org/dl (even if it is redirected to dl.google.com) it would be nice if the checksum is available for download along with the binary.

[rsc]

The checksums are available from https://golang.org/dl/?mode=json.
Maybe that's enough?

[lazyhacker]

Thanks!