It is unclear how to use --enable-managed-virtual-network --enable-managed-vnet

**Related command**
it is unclear how to use --enable-managed-virtual-network --enable-managed-vnet
The flag indicates whether enable managed virtual network.
accepted values: false, true

**Is your feature request related to a problem? Please describe.**
I try this:
` az synapse workspace create --name $synapseWorkspaceName --resource-group $resourceGroupName --storage-account $storageAccountName --managed-rg-name $synapseWorkspaceNameManaged \
--file-system $fileShareName \
--location $location \
--sql-admin-login-user 'sqladminuser' \
--sql-admin-login-password '' \
--repository-type AzureDevOpsGit --account-name $myGitProjectAccountName --project-name $myGitProjectName --tenant-id $tenantId --repository-name $myGitRepositoryName --collaboration-branch $myGitCollaborationBranch
--enable-managed-virtual-network true
--enable-managed-vnet true`
**Describe the solution you'd like**
Must be understandable. With an example is already helpful.

**Describe alternatives you've considered**
Manually turning on. Azure CLI is not of full use.

**Additional context**
Nope.

Start with the `az synapse workspace create` command and its `--enable-managed-virtual-network` and `--enable-managed-vnet` options. Reproduce the reported command with a minimal example, then clarify the accepted boolean values and document an understandable working example; done means the CLI help or command documentation explains how to use the options.

Written by the indexing model from the issue text.