[FIX] - Secret phrase in command (#227)

* Add secret phrase

* Add warning

Author: 0xLucca

.snippets/code/tutorials/polkadot-sdk/parachains/local-chain/spin-your-nodes/key-ed25519-1.html

@@ -2,6 +2,7 @@
   <span data-ty="input"><span class="file-path"></span>./target/release/solochain-template-node key inspect \</span>
   <span data-ty>--scheme Ed25519 \</span>
   <span data-ty>--password-interactive \</span>
+  <span data-ty>"digital width rely long insect blind usual name oyster easy steak spend"</span>
   <span data-ty>Key password:</span>
   <span data-ty>Secret phrase: digital width rely long insect blind usual name oyster easy steak spend</span>
   <span data-ty>Network ID: substrate</span>

tutorials/polkadot-sdk/parachains/local-chain/spin-your-nodes.md

@@ -64,6 +64,14 @@ Follow these steps to generate your keys:
 
     --8<-- 'code/tutorials/polkadot-sdk/parachains/local-chain/spin-your-nodes/key-sr25519-1.html'
 
+    !!!warning "Protect Your Keys"
+        Never share your secret phrase or private keys. If exposed, someone could:
+
+        - Impersonate you on the network
+        - Steal all funds associated with the account
+        - Perform transactions on your behalf
+        - Potentially compromise your entire blockchain identity
+
     Note the Sr25519 public key for the account (SS58 format). This key will be used for producing blocks with Aura. In this example, the Sr25519 public key for the account is `5HMhkSHpD4XcibjbU9ZiGemLpnsTUzLsG5JhQJQEcxp3KJaW`.
 
 3. Use the generated secret phrase to derive keys using the Ed25519 signature scheme. 
@@ -72,6 +80,7 @@ Follow these steps to generate your keys:
     ./target/release/solochain-template-node key inspect \
     --scheme Ed25519 \
     --password-interactive \
+    "INSERT_SECRET_PHRASE"
     ```
 
     When prompted for a **Key password**, enter the same password you used in the previous step