Merge pull request #71 from onflow/Aliserag-Staging-Vid-Add

add Jacob Tucker's staging video to staging guide

docs/cadence_migration_guide/staging-guide.mdx

@@ -17,10 +17,20 @@ This guide aims to simplify the migration process to Cadence 1.0, making it acce
 
 ## Staging a contract
 
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube.com/embed/vhdP1kv_Ooc"
+  title="YouTube video player"
+  frameborder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+  allowfullscreen
+></iframe>
+
 In order to migrate your updated smart contract to Cadence 1.0, it's crucial to stage it on the Testnet network. This preliminary step not only verifies the contract's compatibility and syntactical correctness but also ensures a seamless transition to the new environment.
 
 ```bash
-flow migrate stage-contract HelloWorld --network=testnet
+flow-c1 migrate stage-contract HelloWorld --network=testnet
 ```
 
 Ensure that HelloWorld accurately reflects the name of your contract as specified in your flow.json configuration file.
@@ -30,7 +40,7 @@ Ensure that HelloWorld accurately reflects the name of your contract as specifie
 To confirm that your contract is ready for migration and has been successfully staged, execute the following command:
 
 ```bash
-flow migrate is-staged HelloWorld --network=testnet
+flow-c1 migrate is-staged HelloWorld --network=testnet
 ```
 
 A response of true indicates that your contract has been approved by the Flow Blockchain Testnet network and is ready for the migration process.