Update add-manage-plan-groups.mdx

Author: clairekinde11

src/content/docs/billing/manage-plans/add-manage-plan-groups.mdx

@@ -23,7 +23,7 @@ When you first add a plan in Kinde, you select the plan type and a plan group wi
 
 1. Go to **Billing > Plans**.
 2. Select **Add group**.
-3. Enter a **Name** and select the of plan the group contains.
+3. Enter a **Name** and select the type of plan the group contains.
 4. Choose a colour. This only applies to how the group appears on the **Plans** page.
 5. Select **Save**.
 6. Repeat for all the groups you want to add.