Add renewal callouts to opportunity stages (#42846)

## Summary

- Adds a new "Renewals" section to
`handbook/sales/opportunity-stages.md` with two callouts:
- When a renewal oppty is confirmed to churn, set the stage to "Meeting
set" (0% probability) to signify the churn.
- When renewals are created, they should be set to "PoV (Proof of
Value)".

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---------

Co-authored-by: kiloconnect[bot] <240665456+kiloconnect[bot]@users.noreply.github.com>
Co-authored-by: Sam Pfluger <108141731+Sampfluger88@users.noreply.github.com>

handbook/sales/opportunity-stages.md

@@ -10,6 +10,8 @@ The following details each stage in our new sale process and what is needed to m
 
 ## Meeting set
 
+> If a renewal oppty is confirmed that it will churn, we set the stage to "Meeting set" (0% probability) to signify the churn.
+
 ***Probability***: 0%
 
 ***Definition***: A qualified ICP prospect has scheduled a first meeting with Fleet *OR* had a meaningful conversation with a Fleet Salesperson and wants to learn more.
@@ -87,6 +89,8 @@ The following details each stage in our new sale process and what is needed to m
 
 ## PoV (proof of value)
 
+> When renewals are created, they should be set to "PoV (Proof of Value)".
+
 ***Probability***: 50%
 
 ***Definition***: Fleet is being evaluated against agreed success criteria.
@@ -131,5 +135,9 @@ The following details each stage in our new sale process and what is needed to m
 - Fleet has received a fully executed order form signed by the prospect complete with PO (if required).
 
 
+
+
+
+
 <meta name="maintainedBy" value="chazmac6">
 <meta name="title" value="👑 Opportunity stages">