Sync docs from master to gh-pages

reference/html/README.html

@@ -1732,7 +1732,7 @@ Remember to set the <code>Scan Scope</code> to <code>All sources</code> since we
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reference/html/appendix.html

@@ -490,7 +490,7 @@ Also, you can define your own properties.
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reference/html/features.html

@@ -269,7 +269,7 @@ We&#8217;ve converted the MDC entries from B3 to non B3 keys (e.g. <code>X-B3-Tr
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reference/html/index.html

@@ -3707,7 +3707,7 @@ and order some beers. Then check Zipkin for traces.</p>
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reference/html/intro.html

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reference/html/sagan-boot.html

@@ -210,7 +210,7 @@ public class Application {
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reference/html/sagan-index.html

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reference/html/spring-cloud-sleuth.html

@@ -3707,7 +3707,7 @@ and order some beers. Then check Zipkin for traces.</p>
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