Add documentation on relaying for consumer chains to the Hermes guide

guide/src/SUMMARY.md

@@ -53,7 +53,7 @@
 - [Commands Reference](./documentation/commands/index.md)
   - [Global options and JSON output](./documentation/commands/global.md)
   - [Keys](./documentation/commands/keys/index.md)
-  - [Genearting and Validating Config Files](./documentation/commands/config.md)
+  - [Generating and Validating Config Files](./documentation/commands/config.md)
   - [Path setup](./documentation/commands/path-setup/index.md)
     - [Clients](./documentation/commands/path-setup/clients.md)
     - [Connections](./documentation/commands/path-setup/connections.md)

guide/src/advanced/troubleshooting/cross-comp-config.md

@@ -262,3 +262,20 @@ Depending on how old the missing events are:
   - if state-sync is used, specify an initial state with a height that is smaller than the height at which the event occurred.
     - in order to find out the height of the missing events, use an archive node or a node with bigger pruning window and do the same queries as above
   - restart the node
+
+## Unimplemented gRPC for Cosmos Staking Service
+
+When relaying for a consumer chain, the `ccv_consumer_chain` parameter in `config.toml` *must* be set to `true`.
+If it is not, then when Hermes attempts to relay for a consumer chain, it will typically report an error related 
+to a gRPC endpoint being unimplemented for the staking service:
+
+```
+ERROR error raised while creating client for chain: failed when building client state: gRPC call failed with status: status: Unimplemented, message: "unknown service cosmos.staking.v1beta1.Query", details: [], metadata: MetadataMap { headers: {"content-type": "application/grpc", "content-length": "0", "date": "Thu, 16 Feb 2023 10:42:14 GMT", "server": "Caddy"} }
+```
+
+This error occurs because consumer chains do not utilize the same staking module as sovereign chains. The `ccv_consumer_chain`
+parameter must be set to `true` so that Hermes knows to query a different gRPC endpoint for the relevant `ccvconsumer` parameters
+that it needs in order to relay on behalf of a consumer chain. 
+
+### Fix
+Set `ccv_consumer_chain = true` in `config.toml`.

guide/src/documentation/configuration/configure-hermes.md

@@ -115,6 +115,24 @@ list = [
 ]
 ```
 
+## Configuring Support for Consumer Chains that Utilize Cross-Chain Validation 
+
+As of version 1.4.1, Hermes supports relaying for consumer chains that utilize [cross-chain validation][ccv] (CCV).
+
+> **Note:** A consumer chain is essentially a regular Cosmos-SDK based chain that uses the interchain security
+module to achieve economic security by stake deposited on a provider chain instead of on the consumer chain 
+itself. Consumer chains are bound to their provider chains by the provider's validator set. By being bound 
+together in this way, consumer chains inherit the economic security guarantees of the provider chain.
+>
+> You can read more about consumer chains, and Interchain Security more generally, at [https://cosmos.github.io/interchain-security][cosmos-github-io].
+
+If you are configuring Hermes in order to relay for a consumer chain, set `ccv_consumer_chain = true` in the `config.toml` file. 
+By default, this option is set to `false`. It should *ONLY* be toggled on for CCV consumer chains, *NOT* for sovereign chains.
+
+This parameter is required because consumer chains do not utilize the same staking module as sovereign chains.
+Consumer chains must query a different gRPC endpoint in order to fetch the relevant `ccvconsumer` parameters that Hermes 
+needs in order to relay on behalf of consumer chains.
+
 ## Connecting to a full node protected by HTTP Basic Authentication
 
 To connect to a full node protected by [HTTP Basic Authentication][http-basic-auth],
@@ -165,6 +183,8 @@ be receiving, such as when relaying for CosmWasm-enabled blockchains which emit
 `message` attribute. Without this attribute, the WebSocket is not able to catch these events to stream
 to Hermes, so the `/block_results` RPC endpoint must be used instead. 
 
+[ccv]: https://github.com/cosmos/ibc/blob/main/spec/app/ics-028-cross-chain-validation/README.md
+[cosmos-github-io]: https://cosmos.github.io/interchain-security
 [http-basic-auth]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Authentication
 [ica]: https://github.com/cosmos/ibc/blob/master/spec/app/ics-027-interchain-accounts/README.md
 [chain-registry]: https://github.com/cosmos/chain-registry