docs(return): fix example

[aj-emerich]

No description provided.

[github-actions]

🐋 Docker image

ghcr.io/kestra-io/kestra-pr:12973

docker run --pull=always --rm -it -p 8080:8080 --user=root -v /var/run/docker.sock:/var/run/docker.sock -v /tmp:/tmp ghcr.io/kestra-io/kestra-pr:12973 server local

🧪 Java Unit Tests

	Tests	Passed ✅	Skipped ⚠️	Failed	Time ⏱
Java Tests Report	4057 ran	4044 ✅	13 ⚠️	0 ❌	42m 303ms

[github-actions]

Tests report quick summary:

success ✅ > tests: 4057, success: 4044, skipped: 13, failed: 0

unfold for details

Project	Status	Success	Skipped	Failed
cli	success ✅	80	0	0
core	success ✅	2005	0	0
executor	success ✅	4	0	0
jdbc	success ✅	11	0	0
jdbc-h2	success ✅	473	0	0
jdbc-mysql	success ✅	476	0	0
jdbc-postgres	success ✅	476	0	0
processor	success ✅	7	0	0
runner-memory	success ✅	1	0	0
scheduler	success ✅	23	0	0
script	success ✅	12	0	0
storage-local	success ✅	64	0	0
webserver	success ✅	421	0	0
worker	success ✅	4	0	0

---

Develocity build scan: https://develocity.kestra.io/s/hr72pwvo63ypg

[wrussell1999]

At the moment, all inputs are required so the conditional expression is kinda redundant. Maybe make the inputs optional?