Update index.md

Signed-off-by: Matt-RUN-CKB <matt@nervos.community>

ultimate_guide_to_rgb_rgbpp_and_client_side_validation/index.md

@@ -156,7 +156,7 @@ More specifically, RGB++ maps Bitcoin UTXOs to CKB cells via isomorphic bindings
 
 
 1. **Mapping Bitcoin UTXOs to CKB Cells:** Each Bitcoin UTXO in RGB++ is mapped to a corresponding cell on the CKB blockchain via cryptographic commitments that include the UTXO’s details and their intended operations (e.g., state change or asset transfer)
-2. **Transaction Verification: **When a UTXO is spent on Bitcoin, a commitment to this transaction is included within another transaction's output. This commitment links the Bitcoin transaction to a specific state change or operation on the CKB blockchain.
+2. **Transaction Verification:** When a UTXO is spent on Bitcoin, a commitment to this transaction is included within another transaction's output. This commitment links the Bitcoin transaction to a specific state change or operation on the CKB blockchain.
 3. **Cross-Chain Verification**: The spending of the associated Bitcoin UTXO is verified via a Bitcoin light client running on CKB. The light client imports and verifies the proof of work of Bitcoin block headers, allowing it to confirm the inclusion of the Bitcoin transaction that spends the UTXO and carries the commitment.
 4. **State Update on CKB:** After the Bitcoin transaction is verified on CKB, the corresponding cell is updated to reflect the intended state change or asset transfer, completing the isomorphic binding process.
 
@@ -169,4 +169,4 @@ All of this means that isomorphic binding in RGB++ effectively allows assets iss
 
 Client-side validation and the underlying cryptographic primitives, like deterministic commitments and single-use seals that enable it, undeniably represent significant advancements in Bitcoin scaling. However, judging by RGB’s slow progress, implementing them in a constructive manner that actually scales Bitcoin seems to be easier said than done. 
 
-RGB++, on the other hand, draws inspiration from RGB and utilizes Bitcoin commitments and single-use seals to scale Bitcoin in both throughput and programmability by isomorphically binding UTXOs with cells on CKB. This approach mitigates all of RGB’s drawbacks while retaining most of the benefits, birthing a protocol that provides a significantly better developer and user experience.
+RGB++, on the other hand, draws inspiration from RGB and utilizes Bitcoin commitments and single-use seals to scale Bitcoin in both throughput and programmability by isomorphically binding UTXOs with cells on CKB. This approach mitigates all of RGB’s drawbacks while retaining most of the benefits, birthing a protocol that provides a significantly better developer and user experience.