Sync docs from 1.2.x to gh-pages

1.2.x/multi/multi__span_data_as_messages.html

@@ -7,7 +7,8 @@ adding a Channel Binder implementation
 (e.g. <code class="literal">spring-cloud-starter-stream-rabbit</code> for RabbitMQ or
 <code class="literal">spring-cloud-starter-stream-kafka</code> for Kafka). This will
 automatically turn your app into a producer of messages with payload
-type <code class="literal">Spans</code>.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_zipkin_consumer" href="#_zipkin_consumer"></a>10.1&nbsp;Zipkin Consumer</h2></div></div></div><p>There is a special convenience annotation for setting up a message consumer
+type <code class="literal">Spans</code>. The channel name to which the spans will be sent
+is called <code class="literal">sleuth</code>.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_zipkin_consumer" href="#_zipkin_consumer"></a>10.1&nbsp;Zipkin Consumer</h2></div></div></div><p>There is a special convenience annotation for setting up a message consumer
 for the Span data and pushing it into a Zipkin <code class="literal">SpanStore</code>. This application</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
 <em><span class="hl-annotation" style="color: gray">@EnableZipkinStreamServer</span></em>
 <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> Consumer {

1.2.x/single/spring-cloud-sleuth.html

@@ -618,7 +618,8 @@ adding a Channel Binder implementation
 (e.g. <code class="literal">spring-cloud-starter-stream-rabbit</code> for RabbitMQ or
 <code class="literal">spring-cloud-starter-stream-kafka</code> for Kafka). This will
 automatically turn your app into a producer of messages with payload
-type <code class="literal">Spans</code>.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_zipkin_consumer" href="#_zipkin_consumer"></a>10.1&nbsp;Zipkin Consumer</h2></div></div></div><p>There is a special convenience annotation for setting up a message consumer
+type <code class="literal">Spans</code>. The channel name to which the spans will be sent
+is called <code class="literal">sleuth</code>.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_zipkin_consumer" href="#_zipkin_consumer"></a>10.1&nbsp;Zipkin Consumer</h2></div></div></div><p>There is a special convenience annotation for setting up a message consumer
 for the Span data and pushing it into a Zipkin <code class="literal">SpanStore</code>. This application</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
 <em><span class="hl-annotation" style="color: gray">@EnableZipkinStreamServer</span></em>
 <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> Consumer {

1.2.x/spring-cloud-sleuth.xml

@@ -1383,7 +1383,8 @@ adding a Channel Binder implementation
 (e.g. <literal>spring-cloud-starter-stream-rabbit</literal> for RabbitMQ or
 <literal>spring-cloud-starter-stream-kafka</literal> for Kafka). This will
 automatically turn your app into a producer of messages with payload
-type <literal>Spans</literal>.</simpara>
+type <literal>Spans</literal>. The channel name to which the spans will be sent
+is called <literal>sleuth</literal>.</simpara>
 <section xml:id="_zipkin_consumer">
 <title>Zipkin Consumer</title>
 <simpara>There is a special convenience annotation for setting up a message consumer