Fix TTL extension parameters section format (#1732)

Author: dmkozh

docs/networks/resource-limits-fees.mdx

@@ -33,7 +33,11 @@ These define the maximum amount of work a single Smart contract transaction can
 
 These define TTL extension parameters.
 
-| Persistent entry TTL on creation | 120 days | | Temporary entry TTL on creation | 1 day | | Max ledger entry TTL extension | 6 months |
+| Network Setting                  | Value    |
+| -------------------------------- | -------- |
+| Persistent entry TTL on creation | 120 days |
+| Temporary entry TTL on creation  | 1 day    |
+| Max ledger entry TTL extension   | 6 months |
 
 ### Ledger-wide limits