update sdk launch prover docs

Author: yiweichi

src/content/docs/en/sdk/guides/digital-ocean-alt-gas-token.mdx

@@ -542,7 +542,7 @@ Some services do not support this without additional configurations (for example
 
 The Scroll team has been collaborating closely with teams specializing in proof generation to enable plug-and-play proof generation for SDK networks.
 
-In this example, we'll use a sample chart from the `sindri-scroll-sdk` repo to generate proofs with [Sindri](https://sindri.app/docs/introduction/). For more, you can check out [here]https://docs.scroll.io/en/sdk/technical-stack/proof-generation/#outsourcing-proof-generation-to-external-service-providers)
+In this example, we'll use a sample chart from the `sindri-scroll-sdk` repo to generate proofs with [Sindri](https://sindri.app/docs/introduction/). For more proof generation providers, please check out [here](https://docs.scroll.io/en/sdk/technical-stack/proof-generation/#outsourcing-proof-generation-to-external-service-providers)
 
 Because this feature is not directly built into the Scroll SDK, there will be quite a bit of copy-pasting.