DPS: fix misspelled word in path (#13454)

* DPS: fix misspelled word in path

* DPS: Default to GA API version

Author: David R. Williamson

specification/deviceprovisioningservices/resource-manager/readme.csharp.md

@@ -17,5 +17,5 @@ csharp:
   client-side-validation: false
   clear-output-folder: true
   namespace: Microsoft.Azure.Management.DeviceProvisioningServices
-  output-folder: $(csharp-sdks-folder)/deviceprovisioningservcies/Microsoft.Azure.Management.DeviceProvisioningServcies/src/Generated
+  output-folder: $(csharp-sdks-folder)/deviceprovisioningservices/Microsoft.Azure.Management.DeviceProvisioningServices/src/Generated
 ```

specification/deviceprovisioningservices/resource-manager/readme.md

@@ -26,7 +26,7 @@ These are the global settings for the API.
 
 ``` yaml
 openapi-type: arm
-tag: package-preview-2020-09
+tag: package-2020-03
 ```
 
 ### Tag: package-preview-2020-09