(DOCSP-12671): Billing Page Lists Sync Minutes in ms vs min

Author: nlarew

source/billing.txt

@@ -184,9 +184,9 @@ user has an active connection to the sync server even if they are not
 transferring data at the time. Sync is billed at a set rate for each 
 millisecond of sync runtime per user.
 
-**Price:** $0.08 / 1,000,000 runtime minutes ($0.00000008 / ms)
+**Price:** $0.08 / 1,000,000 runtime minutes ($0.00000008 / min)
 
-**Formula:** (# Active Users) * (Sync time (ms / user)) * ($0.00000008 / ms)
+**Formula:** (# Active Users) * (Sync time (min / user)) * ($0.00000008 / min)
 
 **Free Tier Threshold:** 1,000,000 :ref:`requests <billing-requests>` **or** 500
 hours of :ref:`compute <billing-compute>` **or** 10,000 hours of :ref:`sync