introduce a new tag to keep the go sdk package unchanged

Author: ArcturusZhang

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

@@ -13,20 +13,20 @@ go:
 
 ``` yaml $(go) && $(multiapi)
 batch:
-  - tag: package-2020-10-25
+  - tag: package-2020-10-25-stable
   - tag: package-preview-2019-07-19
   - tag: package-preview-2019-04
   - tag: package-2018-06
   - tag: package-2017-11
 ```
 
-### Tag: package-2020-10-25 and go
+### Tag: package-2020-10-25-stable and go
 
-These settings apply only when `--tag=package-2020-10-25 --go` is specified on the command line.
+These settings apply only when `--tag=package-2020-10-25-stable --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-2020-10-25' && $(go)
-output-folder: $(go-sdk-folder)/services/preview/$(namespace)/mgmt/2020-10-25/$(namespace)
+``` yaml $(tag)=='package-2020-10-25-stable' && $(go)
+output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2020-10-25/$(namespace)
 ```
 
 ### Tag: package-preview-2019-07-19 and go

specification/reservations/resource-manager/readme.md

@@ -39,6 +39,16 @@ input-file:
   - Microsoft.Capacity/stable/2020-10-25/quota.json
 ```
 
+### Tag: package-2020-10-25-stable
+
+These settings apply only when `--tag=package-2020-10-25-stable` is specified on the command line.
+
+``` yaml $(tag) == 'package-2020-10-25-stable'
+input-file:
+  - Microsoft.Capacity/stable/2017-11-01/reservations.json
+  - Microsoft.Capacity/stable/2020-10-25/quota.json
+```
+
 ### Tag: package-2020-11-preview
 
 These settings apply only when `--tag=package-2020-11-preview` is specified on the command line.