Edited ch04_keys.adoc with Atlas code editor

ch04_keys.adoc

@@ -691,6 +691,8 @@ encoding process.
 .Base58check encoding: a base58, versioned, and checksummed format for unambiguously encoding bitcoin data
 image::images/mbc3_0406.png["Base58CheckEncoding"]
 
+++++
+<p class="fix_tracking2">
 In Bitcoin, other data besides public key commitments are presented to the user in
 base58check encoding to make that data compact, easy to read, and easy to detect
 errors. The version prefix in base58check encoding is used to create
@@ -701,7 +703,9 @@ that is encoded and how to use it. This is what differentiates, for
 example, a base58check-encoded Bitcoin address that starts with a 1 from
 a base58check-encoded private key wallet import format (WIF) that starts with a 5. Some example
 version prefixes and the resulting base58 characters are shown in
-<<base58check_versions>>.
+<a data-type="xref" href="#base58check_versions">#base58check_versions</a>.
+</p>
+++++
 
 ++++
 <table id="base58check_versions">