[Go] Add Batch tag for frontdoor package-2020-11 (#17167)

Author: Alancere

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

@@ -29,8 +29,18 @@ batch:
   - tag: package-2020-01
   - tag: package-2020-04
   - tag: package-2020-05
-  
+  - tag: package-2020-11
 ```
+
+### Tag: package-2020-11 and go
+
+These settings apply only when `--tag=package-2020-11 --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-2020-11' && $(go)
+output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2020-11-01/$(namespace)
+```
+
 ### Tag: package-2020-05 and go
 
 These settings apply only when `--tag=package-2020-05 --go` is specified on the command line.