Customer feedback | az network express-route gateway | explicitly address on the Documentation that EXR or VPN GW should not be longer than 64 characters!

### Describe the bug

This GitHub issue is being moved from MicrosoftDocs/azure-docs-cli [Issue #4564](https://github.com/MicrosoftDocs/azure-docs-cli/issues/4564) as it pertains to reference content. Please route to Azure ExpressRoute service team.

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**Type of issue**
Missing information

**Feedback**
HI, I recently filed an ICM to address an issue in which a EXR GW on a VHUB was going along with its connections to a Failed Status: https://portal.microsofticm.com/imp/v5/incidents/details/533601064/summary

The product group confirmed that a name larger than that will cause several issues on the back end, and will lead to the GW and its connections to a failed status.

**Can you please indicate on the command "az network express-route gateway create" that as NOTE name shouldn't be larger than 64 characters?**

Page URL
https://learn.microsoft.com/en-us/cli/azure/network/express-route/gateway?view=azure-cli-latest#az-network-express-route-gateway-create

Content source URL
https://github.com/MicrosoftDocs/azure-docs-cli/blob/main/latest/docs-ref-autogen/network/express-route/gateway.yml

### Related command

az network express-route gateway create

### Errors

n/a

### Issue script & Debug output

n/a

### Expected behavior

n/a

### Environment Summary

Azure CLI 2.63.0

### Additional context

_No response_