Update sui-bridging.mdx for the correct anchor link

[siphonelee]

Description

In line 7: Sui supports bridging through .... and Wormhole Portal Bridge.

Updating line 27 to make the anchor link match with line 7, or else the section jump from lin 7 would fail.

Test plan

N/A

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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:

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Name	Status	Preview	Comments	Updated (UTC)
sui-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 18, 2024 5:11pm

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