Update Product design rituals (#23205)

- We no longer commit to 6 weeks:
#22706
- Description for confirm and celebrate is outdated

handbook/product-design/product-design.rituals.yml

@@ -9,7 +9,7 @@
   task: "🎁 Feature fest" # 2024-03-06 TODO: Link to responsibility or corresponding "how to" info e.g. https://fleetdm.com/handbook/company/product-groups#making-changes
   startedOn: "2024-03-07" 
   frequency: "Triweekly" 
-  description: "We make a decision regarding which customer and community feature requests can be committed to in the next six weeks." 
+  description: "We make a decision regarding which feature requests can be prioritized." 
   moreInfoUrl: "https://fleetdm.com/handbook/company/product-groups#feature-fest"
   dri: "noahtalerman" 
 -
@@ -65,7 +65,7 @@
   task: "Product confirm and celebrate" # 2024-03-06 TODO: Link to responsibility or corresponding "how to" info e.g. https://fleetdm.com/handbook/company/product-groups#making-changes
   startedOn: "2024-02-27" 
   frequency: "Weekly" 
-  description: "Review user stories we shipped but haven't closed/ Confirm all the loose ends are tied up: docs, internal and external comms, guides, pricing page, transparency page, user permissions." 
+  description: "Review the checkboxes in user stories we shipped but haven't closed. Are they done? If not notify relevant contributor to help get them done." 
   moreInfoUrl: 
   dri: "noahtalerman"
 -