Update identity.mdx

Author: saulmc

src/pages/identity.mdx

@@ -146,6 +146,6 @@ List all wallet addresses and names that can message from a given XMTP inbox:
 
     Currently, wallet linking and unlinking operations are free. However, when the system transitions to the XMTP appchain, these operations will incur small gas fees, likely fractions of a cent. To ease user onboarding, applications can register on-chain as fee payers, covering these costs for new users during sign-up.
 
-**10. How public is my identity association history?**
+10. **How public is my identity association history?**
 
     Identity association history is currently public and viewable through our SDKs. In the future, it will also be recorded onchain, making it permissionlessly accessible. Anyone can construct a list of wallets associated with an identity. Users who wish to maintain a private, unlinkable identity should use a separate identity for any public wallet addresses.