change readme.go.md template to track 2 (#15972)

Author: ArcturusZhang

documentation/samplefiles/readme.go.md

@@ -2,25 +2,10 @@
 
 These settings apply only when `--go` is specified on the command line.
 
-```yaml $(go)
-go:
-  license-header: MICROSOFT_MIT_NO_VERSION
-  namespace: [[ServiceName]]
-  clear-output-folder: true
-```
-
-### Go multi-api
-
-``` yaml $(go) && $(multiapi)
-batch:
-  - tag: package-[[Version]][[-ReleaseState]]
-```
-
-### Tag: package-[[Version]][[-ReleaseState]] and go
-
-These settings apply only when `--tag=package-[[Version]][[-ReleaseState]] --go` is specified on the command line.
-Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
-
-```yaml $(tag) == 'package-[[Version]][[-ReleaseState]]' && $(go)
-output-folder: $(go-sdk-folder)/services[[/ReleaseState]]/$(namespace)/mgmt/[[Version]]/$(namespace)
+```yaml $(go) && $(track2)
+azure-arm: true
+license-header: MICROSOFT_MIT_NO_VERSION
+module-name: sdk/[[ServiceName]]/arm[[ServiceName]]
+module: github.com/Azure/azure-sdk-for-go/$(module-name)
+output-folder: $(go-sdk-folder)/$(module-name)
 ```

documentation/samplefiles/samplereadme.md

@@ -51,7 +51,7 @@ This is not used by Autorest itself.
 swagger-to-sdk:
   - repo: azure-sdk-for-python-track2
   - repo: azure-sdk-for-java
-  - repo: azure-sdk-for-go
+  - repo: azure-sdk-for-go-track2
   - repo: azure-sdk-for-js
   - repo: azure-resource-manager-schemas
   - repo: azure-cli-extensions