[Go] loadtestservice rename module-name (Azure#21602)

Author: Alancere

specification/loadtestservice/resource-manager/readme.go.md

@@ -6,7 +6,7 @@ These settings apply only when `--go` is specified on the command line.
 
 azure-arm: true
 license-header: MICROSOFT_MIT_NO_VERSION
-module-name: sdk/resourcemanager/loadtestservice/armloadtesting
+module-name: sdk/resourcemanager/loadtesting/armloadtesting
 module: github.com/Azure/azure-sdk-for-go/$(module-name)
 output-folder: $(go-sdk-folder)/$(module-name)