readme changes (#214)

src/storage-preview/readme.md → src/storage-preview/README.md

@@ -8,11 +8,11 @@ az extension add --name storage-preview
 ```
 
 ### Included Features
-**OAuth**
+**OAuth:**
 Allow use of login credentials for authorization of storage operations: [more info](https://docs.microsoft.com/en-us/rest/api/storageservices/authenticate-with-azure-active-directory)
 
-**WORM(Write-Once-Read-Many)**
-Manage immutability storage with Azure blobs: [more info](https://azure.microsoft.com/en-us/blog/azure-immutable-blob-storage-now-in-public-preview/)
+**WORM(Write-Once-Read-Many):**
+Manage immutability storage with Azure blobs: [more info](https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-immutable-storage)
 
-**Management Policy**
+**Management Policy:**
 Manage data policy rules associated with a storage account: [more info](https://docs.microsoft.com/en-us/azure/storage/common/storage-lifecycle-managment-concepts)