Correct output folder for code generation (#13022)

Author: greenms

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

@@ -11,7 +11,7 @@ csharp:
   clear-output-folder: true
   client-side-validation: false
   namespace: Microsoft.Azure.Management.RedisEnterprise
-  output-folder: $(csharp-sdks-folder)/redisenterprise/Microsoft.Azure.Management.RedisEnterprise/src/Generated
+  output-folder: $(csharp-sdks-folder)/redisenterprise/Microsoft.Azure.Management.RedisEnterpriseCache/src/Generated
 
 directive:
   # Rename constants in the generated code