Learn Editor: Update access-tiers-overview.md

Author: beber-msft

articles/storage/blobs/access-tiers-overview.md

@@ -93,7 +93,7 @@ Migrating a storage account from LRS to GRS is supported as long as no blobs wer
 
 ## Default account access tier setting
 
-Storage accounts have a default access tier setting that indicates the online tier in which a new blob is created. The default access tier setting can be set to either hot or cool. Users can override the default setting for an individual blob when uploading the blob or changing its tier.
+Storage accounts have a default access tier setting that indicates the online tier in which a new blob is created. The default access tier setting can be set to either hot, cool or cold. Users can override the default setting for an individual blob when uploading the blob or changing its tier.
 
 The default access tier for a new general-purpose v2 storage account is set to the hot tier by default. You can change the default access tier setting when you create a storage account or after it's created. If you don't change this setting on the storage account or explicitly set the tier when uploading a blob, then a new blob is uploaded to the hot tier by default.