Typo Uknown in network/resource-manager/Microsoft.Network/networkWatcher.json

[nschonni]

Should be "Unknown"
Found in a few API versions https://github.com/Azure/azure-rest-api-specs/search?q=Uknown&type=Code

[nschonni]

@number213 not sure if this is your group too

[anton-evseev]

@irrogozh @MikhailTryakhov please take a look