Update access-tiers-overview.md

Author: JamesJBarnett

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

@@ -124,7 +124,7 @@ Changing a blob's tier from a warmer tier to a cooler one is instantaneous, as i
 
 Keep in mind the following points when changing a blob's tier:
 
-- You can't use **Set Blob Tier** to archive a a blob that uses an encryption scope. You can only use **Set Blob Tier** to move between online access tiers. For more information about encryption scopes, see [Encryption scopes for Blob storage](encryption-scope-overview.md).
+- You can't use **Set Blob Tier** to archive a blob that uses an encryption scope. You can only use **Set Blob Tier** to move between online access tiers. For more information about encryption scopes, see [Encryption scopes for Blob storage](encryption-scope-overview.md).
 
 - If a blob is explicitly moved to the cool or cold tier and then moved to the archive tier, the early deletion charge applies.