Update documentation links from openark/percona to proxysql

[renecannao]

Phase 1, Task 6

Part of: Phase 1 — Identity & Trust (4.0.0-rc1)
Plan: docs/superpowers/plans/2026-03-23-phase1-identity-and-trust.md
Depends on: #1 (README rebrand — to avoid merge conflicts)

Description

Bulk-update all documentation files to reference proxysql/orchestrator instead of openark/orchestrator or percona/orchestrator.

Files (17 docs files)

docs/install.md, docs/license.md, docs/orchestrator-client.md, docs/pseudo-gtid-manual-injection.md, docs/risks.md, docs/users.md, docs/using-the-web-api.md, docs/agents.md, docs/bugs.md, docs/build.md, docs/ci-env.md, docs/ci.md, docs/configuration-discovery-pseudo-gtid.md, docs/configuration.md, docs/docker.md, docs/download.md, docs/faq.md

Rules

• Replace github.com/openark/orchestrator → github.com/proxysql/orchestrator
• Replace github.com/percona/orchestrator → github.com/proxysql/orchestrator
• Do NOT change historical references clearly about the old repo
• Do NOT change the Go module path in source code (that's Phase 2)
• Do NOT change references to openark/orchestrator-ci-env (separate repo)

Acceptance Criteria

• grep -rn "openark/orchestrator" docs/ | grep -v "ci-env" | grep -v "spec" returns empty
• grep -rn "percona/orchestrator" docs/ | grep -v "spec" returns empty

[renecannao]

Done in PR #15