fix: Account Docs Formatting (#787)

Author: milldr

docs/layers/accounts/deploy-accounts.mdx

@@ -175,7 +175,7 @@ This step-by-step process outlines how to deploy AWS accounts using `atmos` work
   </Step>
 
   <Step>
-    ### <StepNumber/> ClickOps to Complete Account Setup
+    ## <StepNumber/> ClickOps to Complete Account Setup
 
     For each new account, you will need to perform some manual configurations via ClickOps. These configurations include setting up the root account credentials, enabling MFA, and unsubscribing the account's email address from all marketing emails.