Update readme

specification/migrate/resource-manager/readme.md

@@ -21,11 +21,19 @@ batch:
 ```
 
 
+### Tag: package-preview-2023-10
+
+These settings apply only when `--tag=package-preview-2023-10` is specified on the command line.
+
+```yaml $(tag) == 'package-preview-2023-10'
+input-file:
+  - Microsoft.OffAzure/preview/2023-10-01-preview/migrate.json
+```
 ### Tag: package-2023-06
 
 These settings apply only when `--tag=package-2023-06` is specified on the command line.
 
-```yaml $(tag) == 'package-2023-06'
+``` yaml $(tag) == 'package-2023-06'
 input-file:
   - Microsoft.OffAzure/stable/2023-06-06/migrate.json
 ```
@@ -34,7 +42,7 @@ input-file:
 
 These settings apply only when `--tag=package-migrate-2023-03` is specified on the command line.
 
-```yaml $(tag) == 'package-migrate-2023-03'
+``` yaml $(tag) == 'package-migrate-2023-03'
 input-file:
   - Microsoft.Migrate/AssessmentProjects/stable/2023-03-15/migrate.json
 ```
@@ -163,14 +171,14 @@ These are the global settings for the API.
 
 ``` yaml
 openapi-type: arm
-tag: package-migrate-2023-03
+tag: package-preview-2023-10
 ```
 
 ### Tag: package-migrate-2023-03
 
 These settings apply only when `--tag=package-migrate-2023-03` is specified on the command line.
 
-```yaml $(tag) == 'package-migrate-2023-03'
+``` yaml $(tag) == 'package-migrate-2023-03'
 input-file:
   - Microsoft.Migrate/AssessmentProjects/stable/2023-03-15/migrate.json
 ```