fix(CLI releases docs): Add additional required scope for set-commits

[lobsterkatie]

Currently, the CLI authentication docs only list two required scopes:

But as it turns out, you can't use set-commits unless you also have org:readscope:

• calling set-commits calls list_org_repos: https://github.com/getsentry/sentry-cli/blob/d12a258c681bb57f00769ea962b4355fb2979637/src/commands/releases.rs#L400

• list_org_repos makes a get requtest to the /organizations/{org-slug}/repos/ endpoint: https://github.com/getsentry/sentry-cli/blob/d12a258c681bb57f00769ea962b4355fb2979637/src/api.rs#L1210

• that endpoint inherits from OrgEndpoint: https://github.com/getsentry/sentry/blob/f5998e667adb39907fb58db9fe66f1b2482db263/src/sentry/api/endpoints/organization_repositories.py#L16

• OrgEndpoint uses OrgPermissions: https://github.com/getsentry/sentry/blob/f5998e667adb39907fb58db9fe66f1b2482db263/src/sentry/api/bases/organization.py#L122

• OrgPermissions needs at least org:read for GETing: https://github.com/getsentry/sentry/blob/f5998e667adb39907fb58db9fe66f1b2482db263/src/sentry/api/bases/organization.py#L31

This PR adds the missing scope and reorganizes the text a bit:

[markstory]

Looks good to me content wise. Does this need to be an alert or could it be part of the first paragraph?

[lobsterkatie]

I put it as an alert because it's a "you gotta do me before any of the rest of this will work" kind of thing. Didn't want it to be missed by someone skimming, and other permissions stuff is called out this way:

[lobsterkatie]

Another option is to just add org:read to the initial list of scopes we require (even though it's not required for all CLI commands).

[markstory]

Including org:read as a default permission is a good option. It sets people up for success later and saves them having to backtrack to update permissions later on.

[lobsterkatie]

Okay - pulled it out of the releases page and added it into the default config. Since I was there anyway, also made the edits I was planning to stick into a different PR. Lemme know what you think.

[markstory]

Looks good to me.

[lobsterkatie]

Great, thanks. Caught one typo (in two spots) - fixed and will merge once the tests pass.