fixes in the node command guide, added more commands (#879)

* fixes in the node command guide, added more commands

* fixed a typo

docs/developer-docs/docs/operate-a-node/create-a-validator.md

@@ -21,7 +21,7 @@ wardend keys add my-key-name
 Alternatively, you can restore an existing wallet with a mnemonic seed phrase. Replace `my-key-name` with a key name of your choice and run the following: 
 
 ```bash
-wardend keys add my-key-name --recover.
+wardend keys add my-key-name --recover
 ```
 
 Then get your public address:

docs/developer-docs/docs/operate-a-node/node-commands.md

@@ -22,12 +22,13 @@ To interact with the node, you need to install the [Warden binary](https://githu
 
 ## Execute `wardend` commands
 
-To execute a node command, just run `wardend`, followed by the command. Include the `--node` flag with the node endpoint.
+To execute a node command, just run `wardend`, followed by the command. If you need to specify a node to interact with, include the `--node` flag with the node endpoint.
 
-For example, to check the node status, run the example below, using the preferred endpoint.
+For example, to check the node status, run the example below using the preferred endpoint:
 
 ```bash
-wardend status --node https://rpc.buenavista.wardenprotocol.org:443
+wardend status \
+  --node https://rpc.buenavista.wardenprotocol.org:443
 ```
 
 :::tip
@@ -73,13 +74,15 @@ Here are some of the available `wardend query warden` subcommands with examples:
 - `keychains`: This command returns a list of your [Keychains](/learn/glossary#keychain).
 
    ```bash
-   wardend query warden keychains --node https://rpc.buenavista.wardenprotocol.org:443
+   wardend query warden keychains \
+     --node https://rpc.buenavista.wardenprotocol.org:443
    ```
 
 - `spaces`: This command returns a list of your [Spaces](/learn/glossary#space).
 
    ```bash
-   wardend query warden spaces --node https://rpc.buenavista.wardenprotocol.org:443
+   wardend query warden spaces\
+     --node https://rpc.buenavista.wardenprotocol.org:443
    ```
 
 ### `keys`: Manage keys
@@ -95,25 +98,33 @@ Here are some examples of `wardend keys` commands:
 - `list`: This command returns a list of your keys.
 
    ```bash
-   wardend keys list --node https://rpc.buenavista.wardenprotocol.org:443
+   wardend keys list
    ```
 
-- `add`: This command adds a key – you executed it when setting up your node. It requires specifying an arbitrary key name.
+- `add`: This command adds a key, either newly generated or recovered.
+
+   To create a new key, you need to specify its name:
 
    ```bash
-   wardend keys add my-key-name --node https://rpc.buenavista.wardenprotocol.org:443
+   wardend keys add my-key-name
+   ```
+
+   To restore a key from its seed phrase, add the `--recover` flag:
+
+   ```bash
+   wardend keys add my-key-name --recover
    ```
 
 - `delete`: This command deletes a key, identified by its name.
 
    ```bash
-   wardend keys delete my-key-name --node https://rpc.buenavista.wardenprotocol.org:443
+   wardend keys delete my-key-name
    ```
 
-- `add-keychain-writer`: This command adds a new [Keychain Writer](/learn/glossary#keychain-writer). It requires specifying an arbitrary Keychain Writer name.
-   
+- `show`: This command returns key information. For example, you can get the key address by its name:
+
    ```bash
-   wardend keys add my-keychain-writer-name --node https://rpc.buenavista.wardenprotocol.org:443
+   wardend keys show my-key-name --address
    ```
 
 ### `tx`: Initiate transactions