Edited ch09_fees.adoc with Atlas code editor

ch09_fees.adoc

@@ -142,7 +142,7 @@ rare occasions.
 
 === Estimating Appropriate Fee Rates
 
-We've established that you can pay a lower fee rate if you're willing to
+We've ((("estimating", "fee rates", id="estimate-fee-rate")))established that you can pay a lower fee rate if you're willing to
 wait longer for your transaction to be confirmed, with the exception
 that paying too low of a fee rate could result in your transaction never
 confirming.  Because fee rates are bids in an open auction for block
@@ -186,7 +186,7 @@ rate and it will be confirmed earlier than expected.  There's no way to
 lower the fee rate on a transaction you've already sent, so you're stuck
 paying a higher fee rate.  But, when fee rates go up, there's a need for
 methods to be able to increase the fee rates on those transactions,
-which is called _fee bumping_.  There are two commonly used types of((("transaction fees", "fee rates", startref="fees-rates")))((("fee rates", startref="fee-rate"))) fee
+which is called _fee bumping_.  There are two commonly used types of((("transaction fees", "fee rates", startref="fees-rates")))((("fee rates", startref="fee-rate")))((("estimating", "fee rates", startref="estimate-fee-rate"))) fee
 bumping in Bitcoin, replace by fee (RBF) and child pays for parent
 (CPFP).