fix: adding reference to offerArgs in zoe.md

main/reference/zoe-api/zoe.md

@@ -364,6 +364,7 @@ Every **Keyword** in **give** must have a corresponding **payment**.
 const paymentKeywordRecord = harden({ Asset: quatloosPayment });
 ```
 
+<a id="offerargs"></a>
 ### Offer Arguments
 
 **offerArgs** is an optional CopyRecord that can be used to pass additional arguments to the