Updates readme

Author: SrinikhilReddy

specification/cosmos-db/resource-manager/readme.md

@@ -36,6 +36,24 @@ tag: package-preview-2023-03
 These settings apply only when `--tag=package-preview-2023-03` is specified on the command line.
 
 ```yaml $(tag) == 'package-preview-2023-03'
+input-file:
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/cosmos-db.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/dataTransferService.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/managedCassandra.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/mongoCluster.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/mongorbac.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/notebook.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/privateEndpointConnection.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/privateLinkResources.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/rbac.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/restorable.json
+  - Microsoft.DocumentDB/preview/2023-03-15-preview/services.json
+```
+### Tag: package-preview-2023-03
+
+These settings apply only when `--tag=package-preview-2023-03` is specified on the command line.
+
+``` yaml $(tag) == 'package-preview-2023-03'
 input-file:
   - Microsoft.DocumentDB/preview/2023-03-01-preview/cosmos-db.json
   - Microsoft.DocumentDB/preview/2023-03-01-preview/dataTransferService.json
@@ -51,6 +69,7 @@ input-file:
 modelerfour:
   lenient-model-deduplication: true
 ```
+
 ### Tag: package-preview-2022-11
 
 These settings apply only when `--tag=package-preview-2022-11` is specified on the command line.