Edited ch02_overview.adoc with Atlas code editor

ch02_overview.adoc

@@ -491,7 +491,7 @@ Mining is designed to be a decentralized lottery.  Each miner can create
 their own lottery ticket by creating a _candidate block_ that includes
 the new transactions they want to mine plus some additional data fields.
 The miner inputs their candidate into a specially designed algorithm that
-scrambles (or "hashes") the data, producing output that looks nothing
+scrambles((("hash functions"))) (or "hashes") the data, producing output that looks nothing
 like the input data.  This _hash_ function will always produce the same
 output for the same input--but nobody can predict what the output will
 look like for a new input, even if it is only slighly different from a