update

Author: adela-bytebase

docs/tutorials/first-schema-change.mdx

@@ -43,7 +43,7 @@ Learn Bytebase's schema change workflow using sample databases.
 
    Click **Create**.
 
-1. The plan starts in `Draft` status. Any SQL review warnings appear because Bytebase automatically checks against your configured policy. Click warnings for details.
+1. The plan is converted into an issue and is in `Draft` status. Any SQL review warnings appear because Bytebase automatically checks against your configured policy. Click warnings for details.
 
    ![plan-warning-detail](/content/docs/tutorials/first-schema-change/bb-plan-warning-detail.webp)
 
@@ -62,7 +62,7 @@ Learn Bytebase's schema change workflow using sample databases.
 1. No approval is required for this change.
    ![issue-2-targets-no-approval](/content/docs/tutorials/first-schema-change/bb-issue-2-targets-no-approval.webp)
 
-## Step 4 - Deploy Changes
+## Step 5 - Deploy Changes
 
 1. In the **Rollout** section, both Test and Prod deployments are ready.
    ![issue-2-targets-to-rollout](/content/docs/tutorials/first-schema-change/bb-issue-2-targets-to-rollout.webp)