fix: update stale Stargate bridge link in getting funds guide

[yelistratov1994]

Summary

Updates the LayerZero / Stargate links on the Getting Funds page to point to the current bridge guide.

Root Cause

src/pages/guide/getting-funds.mdx still linked to the legacy route /guide/bridge-usdc-stargate.

That old route is redirected in vercel.json, so opening it in a new tab can still land on the right page. But normal in-app navigation uses the client-side route directly, which currently shows Page Not Found.

User Impact

Before this change, users clicking the LayerZero / Stargate links from the Getting Funds page could hit a broken docs page during normal navigation.

Changes

• update the LayerZero (Stargate) link to /guide/bridge-layerzero
• update the full bridging guide link to /guide/bridge-layerzero

Validation

• confirmed the stale route was still referenced in src/pages/guide/getting-funds.mdx
• confirmed the current canonical guide is src/pages/guide/bridge-layerzero.mdx
• confirmed the sidebar also points to /guide/bridge-layerzero
• confirmed the old route still exists only as a server redirect in vercel.json

Screenshot

Attached: Page Not Found shown when clicking the stale link via normal site navigation.

[vercel]

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