Update packet-capture-overview.md

Author: halkazwini

articles/network-watcher/packet-capture-overview.md

@@ -51,7 +51,7 @@ Use filters to capture only the traffic that you want to monitor. Filters are ba
 
 - There's a limit of 10,000 parallel packet capture sessions per region per subscription. This limit applies only to the sessions and doesn't apply to the saved packet capture files either locally on the VM or in a storage account. See the [Network Watcher service limits page](../azure-resource-manager/management/azure-subscription-service-limits.md#azure-network-watcher-limits) for a full list of limits. 
 
-- Packet capture requires shared access signatures (SAS) authentication to be enabled on the storage account where packet captures are saved. If SAS authentication isn't enabled, packet captures can only be saved to the virtual machine's local disk.
+- Packet capture uses shared access signature (SAS) tokens to access the storage account. Key access must be enabled on the storage account to authorize packet capture's SAS tokens. If key access isn't enabled, packet captures can only be saved to the virtual machine's local disk.
 
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