Update sponsor-txn.mdx (#20392)

## Description 

Describe the changes or additions included in this PR.

## Test plan 

How did you test the new or updated feature?

---

## Release notes

Check each box that your changes affect. If none of the boxes relate to
your changes, release notes aren't required.

For each box you select, include information after the relevant heading
that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] Indexer: 
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:
- [ ] REST API:

docs/content/guides/developer/sui-101/sponsor-txn.mdx

@@ -36,7 +36,7 @@ In this scenario, the sponsor has few restrictions on the type of transactions t
 - If the sponsor is a gasless wallet, it may agree to sponsor any valid transactions proposed by its users.
 - In the form of a reward or discount, the sponsor could offer the user a wildcard gas payment, expressly promising to execute any transactions with that gas payment.
 
-A sponsored transaction is not restricted to these use cases. Essentially, a sponsored transaction is any transaction jointly made by the user and the sponsor. As long as the stakeholders can agree on the transaction details, then the number of possible ways to provide sponsored transactions is limited only by the imagination. Because at least two stakeholders are involved in a sponsored transaction, however, there are some [additional risks](#risk} that you should take steps to mitigate.
+A sponsored transaction is not restricted to these use cases. Essentially, a sponsored transaction is any transaction jointly made by the user and the sponsor. As long as the stakeholders can agree on the transaction details, then the number of possible ways to provide sponsored transactions is limited only by the imagination. Because at least two stakeholders are involved in a sponsored transaction, however, there are some [additional risks](#risk) that you should take steps to mitigate.
 
 
 ## Sponsored transaction flow