typo: "propogation" in Microsoft.Network/stable/2020-06-01/virtualWan.json

https://github.com/Azure/azure-rest-api-specs/blob/1b0ed8edd58bb7c9ade9a27430759527bd4eec8e/specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/virtualWan.json#L5377-L5381
Is a typo that was suppressed in the global dictionary instead of being fixed.

https://github.com/Azure/azure-rest-api-specs/pull/14391 will suppress it at the file level for the current version, then re-flag it if used in the next version

Review specification/network/resource-manager/Microsoft.Network/stable/2020-06-01/virtualWan.json at lines 5377-5381 and compare the issue with pull request 14391. Confirm whether the typo should be corrected or handled by the file-level suppression described there; the issue is done when the intended spelling treatment is applied and validation no longer reports the unwanted dictionary warning.

Written by the indexing model from the issue text.