update general message passing bridges example

This commit adds Axelar as a General message passing bridges example in the Bridge Type section.

Author: Olanetsoft

src/content/developers/docs/bridges/index.md

@@ -42,7 +42,7 @@ Bridges can usually be classified into one of the following buckets:
 
 - **Native bridges –** These bridges are typically built to bootstrap liquidity on a particular blockchain, making it easier for users to move funds to the ecosystem. For example, the [Arbitrum Bridge](https://bridge.arbitrum.io/) is built to make it convenient for users to bridge from Ethereum Mainnet to Arbitrum. Other such bridges include Polygon PoS Bridge, [Optimism Gateway](https://app.optimism.io/bridge), etc.
 - **Validator or oracle based bridges –** These bridges rely on an external validator set or oracles to validate cross-chain transfers. Examples: Multichain and Across.
-- **Generalized message passing bridges –** These bridges can transfer assets, along with messages and arbitrary data across chains. Examples: Nomad and LayerZero.
+- **Generalized message passing bridges –** These bridges can transfer assets, along with messages and arbitrary data across chains. Examples: Nomad, Axelar, and LayerZero.
 - **Liquidity networks –** These bridges primarily focus on transferring assets from one chain to another via atomic swaps. Generally, they don’t support cross-chain message passing. Examples: Connext and Hop.
 
 ## Trade-offs to consider {#trade-offs}