fix pull cert-manager image in install.sh

[lingdie]

No description provided.

[sealos-ci-robot]

🤖 Generated by lychee action

Summary

Status	Count
🔍 Total	1250
✅ Successful	375
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	871
❓ Unknown	0
🚫 Errors	3

Errors per input

Errors in docs/4.0/i18n/zh-Hans/examples/baas/install-fireboom.md

• [ERR] https://fireboom.cloud/ | Failed: Network error: dns error: no record found for Query { name: Name("fireboom.cloud.wor3tbeeecuulo0jx5iwhbl51d.cx.internal.cloudapp.net."), query_type: AAAA, query_class: IN }

Errors in docs/4.0/docs/examples/blog-platform/install-halo.md

• [ERR] https://docs.halo.run/getting-started/prepare | Failed: Network error: Connection reset by peer (os error 104)

Errors in docs/4.0/docs/examples/baas/install-fireboom.md

• [ERR] https://fireboom.cloud/ | Failed: Network error: dns error: no record found for Query { name: Name("fireboom.cloud.wor3tbeeecuulo0jx5iwhbl51d.cx.internal.cloudapp.net."), query_type: AAAA, query_class: IN }

Full action output

Full Github Actions output