docs: update operator guide to v0.5.2 (#908)

Author: JuArce

docs/operator_guides/0_running_an_operator.md

@@ -1,7 +1,7 @@
 # Register as an Aligned operator in testnet
 
 > **CURRENT VERSION:**
-> Aligned Operator [v0.4.0](https://github.com/yetanotherco/aligned_layer/releases/tag/v0.4.0)
+> Aligned Operator [v0.5.2](https://github.com/yetanotherco/aligned_layer/releases/tag/v0.5.2)
 
 > **IMPORTANT:** 
 > You must be [whitelisted](https://docs.google.com/forms/d/e/1FAIpQLSdH9sgfTz4v33lAvwj6BvYJGAeIshQia3FXz36PFfF-WQAWEQ/viewform) to become an Aligned operator.
@@ -41,7 +41,7 @@ Minimum hardware requirements:
 To start with, clone the Aligned repository and move inside it
 
 ```bash
-git clone https://github.com/yetanotherco/aligned_layer.git --branch v0.4.0
+git clone https://github.com/yetanotherco/aligned_layer.git --branch v0.5.2
 cd aligned_layer
 ```
 
@@ -107,6 +107,17 @@ Update the following placeholders in `./config-files/config-operator.yaml`:
 `"<ecdsa_key_store_location_path>"` and `"<bls_key_store_location_path>"` are the paths to your keys generated with the EigenLayer CLI, `"<operator_address>"` and `"<earnings_receiver_address>"` can be found in the `operator.yaml` file created in the EigenLayer registration process.
 The keys are stored by default in the `~/.eigenlayer/operator_keys/` directory, so for example `<ecdsa_key_store_location_path>` could be `/path/to/home/.eigenlayer/operator_keys/some_key.ecdsa.key.json` and for `<bls_key_store_location_path>` it could be `/path/to/home/.eigenlayer/operator_keys/some_key.bls.key.json`.
 
+The default configuration uses the public nodes RPC, but we suggest you use your own nodes for better performance and reliability.
+Also, from v0.5.2 there is a fallback mechanism to have two RPCs, so you can add a second RPC for redundancy.
+
+```yaml
+eth_rpc_url: "https://ethereum-holesky-rpc.publicnode.com"
+eth_rpc_url_fallback: "https://ethereum-holesky-rpc.publicnode.com"
+eth_ws_url: "wss://ethereum-holesky-rpc.publicnode.com"
+eth_ws_url_fallback: "wss://ethereum-holesky-rpc.publicnode.com"
+```
+
+
 ## Step 4 - Deposit Strategy Tokens
 
 We are using [WETH](https://holesky.eigenlayer.xyz/restake/WETH) as the strategy token.