Move getrawtx example to snippet for reuse

ch03.asciidoc

@@ -780,19 +780,12 @@ transaction was recorded on the blockchain.
 Let's use the API to retrieve and examine that transaction by passing
 the txid as a parameter:
 
-++++
+[[alice_tx_serialized]]
-<pre data-type="programlisting">
+.Alice's serialized transaction
-$ bitcoin-cli getrawtransaction 466200308696215bbc949d5141a49a4138ecdfdfaa2a8&#x21b5;
+[listing]
-029c1f9bcecd1f96177
+----
-
+include::snippets/getrawtransaction-alice.txt[]
-01000000000101eb3ae38f27191aa5f3850dc9cad00492b88b72404f9da135698679268041c54&#x21b5;
+----
-a0100000000ffffffff02204e0000000000002251203b41daba4c9ace578369740f15e5ec880c&#x21b5;
-28279ee7f51b07dca69c7061e07068f8240100000000001600147752c165ea7be772b2c0acb7f&#x21b5;
-4d6047ae6f4768e0141cf5efe2d8ef13ed0af21d4f4cb82422d6252d70324f6f4576b727b7d91&#x21b5;
-8e521c00b51be739df2f899c49dc267c0ad280aca6dab0d2fa2b42a45182fc83e817130100000&#x21b5;
-000
-</pre>
-++++
 
 [TIP]
 ====

snippets/getrawtransaction-alice.txt

@@ -0,0 +1,10 @@
+$ bitcoin-cli getrawtransaction 466200308696215bbc949d5141a49a41\
+38ecdfdfaa2a8029c1f9bcecd1f96177
+
+01000000000101eb3ae38f27191aa5f3850dc9cad00492b88b72404f9da13569
+8679268041c54a0100000000ffffffff02204e0000000000002251203b41daba
+4c9ace578369740f15e5ec880c28279ee7f51b07dca69c7061e07068f8240100
+000000001600147752c165ea7be772b2c0acb7f4d6047ae6f4768e0141cf5efe
+2d8ef13ed0af21d4f4cb82422d6252d70324f6f4576b727b7d918e521c00b51b
+e739df2f899c49dc267c0ad280aca6dab0d2fa2b42a45182fc83e81713010000
+0000