replace package-2018-05 with package-2018-06 for Go SDK (#3529)

specification/network/resource-manager/readme.md

@@ -683,7 +683,7 @@ go:
 
 ``` yaml $(go) && $(multiapi)
 batch:
-  - tag: package-2018-05
+  - tag: package-2018-06
   - tag: package-2018-04
   - tag: package-2018-02
   - tag: package-2018-01
@@ -701,13 +701,13 @@ batch:
   - tag: package-2015-05-preview
 ```
 
-### Tag: package-2018-05 and go
+### Tag: package-2018-06 and go
 
-These settings apply only when `--tag=package-2018-05 --go` is specified on the command line.
+These settings apply only when `--tag=package-2018-06 --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-2018-05' && $(go)
-output-folder: $(go-sdk-folder)/services/network/mgmt/2018-05-01/network
+``` yaml $(tag) == 'package-2018-06' && $(go)
+output-folder: $(go-sdk-folder)/services/network/mgmt/2018-06-01/network
 ```
 
 ### Tag: package-2018-04 and go