Fix wording on new prefixed login/signup

[jldec]

Please replace development environment with developer environment

See https://github.com/gitpod-io/gitpod/pull/7046/files#diff-d5bc06eb1f65c48cf02649444cb3081fdaaf7e45039b6975b7b021ef7a6a4aedR178

[jldec]

/schedule

[roboquat]

@jldec: Issue scheduled in the meta team (WIP: 0)

In response to this:

/schedule

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[gtsiolis]

/assign @championshuttler

[roboquat]

@gtsiolis: GitHub didn't allow me to assign the following users: championshuttler.

Note that only gitpod-io members, repo collaborators and people who have commented on this issue/PR can be assigned. Additionally, issues/PRs can only have 10 assignees at the same time.
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In response to this:

/assign @championshuttler

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[championshuttler]

ping

[gtsiolis]

No worries, @championshuttler! Once we get one of the two PRs[1][2] merged we'll be able to properly assign the issue. 🏓