Edited ch03_bitcoin-core.adoc with Atlas code editor

ch03_bitcoin-core.adoc

@@ -78,7 +78,7 @@ next chapter, which is less technical.
 === Compiling Bitcoin Core from the Source Code
 
 Bitcoin Core's
-source code can be downloaded as an archive or by cloning the
+source code((("Bitcoin Core", "compiling from source code", id="bitcoin-core-compile")))((("compiling", "Bitcoin Core from source code", id="compile-bitcoin-core")))((("source code", "compiling Bitcoin Core", id="source-code-compile"))) can be downloaded as an archive or by cloning the
 source repository from GitHub.  On the https://oreil.ly/hN9g1[Bitcoin Core download
 page], select the most recent version and download the compressed
 archive of the source code. Alternatively, use the Git command line to create a
@@ -335,7 +335,7 @@ libtool: install: /usr/bin/install -c bitcoin-tx /usr/local/bin/bitcoin-tx
 The default installation of +bitcoind+
 puts it in _/usr/local/bin_. You can confirm that Bitcoin Core is
 correctly installed by asking the system for the path of the
-executables, as follows:
+executables, ((("Bitcoin Core", "compiling from source code", startref="bitcoin-core-compile")))((("compiling", "Bitcoin Core from source code", startref="compile-bitcoin-core")))((("source code", "compiling Bitcoin Core", startref="source-code-compile")))as follows:
 
 ----
 $ which bitcoind