Rename playground to best-practices

[github-actions[bot]]

Terraform plan in terraform With var files: terraform/production/org.tfvars terraform/production/repositories.tfvars With variables: github_token = (sensitive value)

Plan: 0 to add, 3 to change, 0 to destroy.

```diff Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols: !~ update in-place Terraform will perform the following actions: # github_team.repo_admin_team["best-practices"] will be updated in-place !~ resource "github_team" "repo_admin_team" { !~ description = "Admin team for the django-commons-playground repository" -> "Admin team for the best-practices repository" id = "9757650" name = "best-practices-admins" # (10 unchanged attributes hidden) } # github_team.repo_committer_team["best-practices"] will be updated in-place !~ resource "github_team" "repo_committer_team" { !~ description = "Committers team for the django-commons-playground repository" -> "Committers team for the best-practices repository" id = "9757668" name = "best-practices-committers" # (10 unchanged attributes hidden) } # github_team.repo_team["best-practices"] will be updated in-place !~ resource "github_team" "repo_team" { !~ description = "Main team for the django-commons-playground repository" -> "Main team for the best-practices repository" id = "9757678" name = "best-practices" # (10 unchanged attributes hidden) } Plan: 0 to add, 3 to change, 0 to destroy. ```

:memo: Plan generated in Plan org changes and list them in a PR #52

[tim-schilling]

@cunla do we merge this and close #126?

[cunla]

@cunla do we merge this and close #126?

yes. I'll do it

[tim-schilling]

Thank you for handling that!