Add minimum RAM permission for the doc

[binkesi]

Hi team, when I try to use packer plugin for Alicloud, I found these are the minimum RAM permission for it to call the Alicloud APIs. Please have a review, thanks.

[hashicorp-cla]

All committers have signed the CLA.

[nywilken]

@binkesi thank you for the documentation update. I would love to get this change in. Could you take a minute to sign the CLA. If it has already been signed please check that your primary GitHub email, as well as the email in the commit, matches the email you signed the CLA with.

[binkesi]

@binkesi thank you for the documentation update. I would love to get this change in. Could you take a minute to sign the CLA. If it has already been signed please check that your primary GitHub email, as well as the email in the commit, matches the email you signed the CLA with.

Thank you! You're right, I found that the Github Email I used for commit is just another email. So should I close this PR and use one same Github email to reopen another PR?

[nywilken]

@binkesi seeing as you only have one commit you can manually change your author email on your fork and force push your changes. I found a small blog post illustrating how to change your email https://dev.to/brayanarrieta/how-to-change-the-git-commit-author-56mg.

If its easier to close and reopen with a new branch using the updated email that is fine too.

[binkesi]

@nywilken Yeah, it work well! Please help to review. Thank you!

[nywilken]

@binkesi thanks for working through the CLA bot checks.

[nywilken]

LGTM