docs: ensure consistency across concept pages

Standardize cycles.md "Next Steps" section to match other concept pages:
- Rename "What's Next?" to "## Next Steps"
- Remove redundant "Related concepts" section
- Use MyST {doc} references instead of markdown links
- Add "For developers" subsection for consistency

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Jeremi

docs/learn/concepts/cycles.md

@@ -389,17 +389,16 @@ graph TD
 
 **Note:** You can only cancel Draft or To Approve cycles. Once approved and distributed, cycles cannot be cancelled.
 
-## What's Next?
+## Next Steps
 
-- **For configuration:** See the Configuration Guide for how to set up cycles
-- **For eligibility:** Learn about {doc}`eligibility` to control who qualifies
-- **For entitlements:** Understand {doc}`entitlements` to configure what beneficiaries receive
-- **For payments:** Explore {doc}`payments` to distribute benefits
+**Learn more about concepts:**
+- {doc}`programs` - The parent container for cycles
+- {doc}`eligibility` - Rules that determine who qualifies
+- {doc}`entitlements` - What beneficiaries receive
+- {doc}`payments` - How benefits are disbursed
 
----
+**For configuration:**
+- See the Configuration Guide for setting up cycles
 
-**Related concepts:**
-- [Programs](programs.md) - The parent container for cycles
-- Eligibility - Rules that determine who qualifies
-- Entitlements - What beneficiaries receive
-- Payments - How benefits are disbursed
+**For developers:**
+- See the Developer Guide for custom cycle managers