Update spec.bs

spec.bs

@@ -1134,10 +1134,10 @@ usually 48 hours, have elapsed since the first redemption.
 
 Preventing Issuer Exhaustion {#issuer-exhaustion}
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-Competing scripts might race to call <code>hasRedemptionRecord(issuer)</code> to ensure their |issuer|
+Competing scripts might race to call <code>hasPrivateToken(issuer)</code> to ensure their |issuer|
 enters the [=issuerAssociations=] [=map=] before the |issuer| of others given a limit of two per
 [=environment/top-level origin=]. To control this process, the [=environment/top-level origin=]
-could call <code>hasRedemptionRecord(issuer)</code> up to twice before any other JavaScript is included
+could call <code>hasPrivateToken(issuer)</code> up to twice before any other JavaScript is included
 to ensure their preferred |issuer|s are available.