HADOOP-19727. downgrade maven site plugin to 3.6
CNFE for a doxia html parser otherwise.
diff --git a/pom.xml b/pom.xml
index 31c9bd8..4fb76d3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -108,7 +108,7 @@
<!-- maven plugin versions -->
<maven-deploy-plugin.version>3.1.1</maven-deploy-plugin.version>
- <maven-site-plugin.version>4.0.0-M8</maven-site-plugin.version>
+ <maven-site-plugin.version>3.6</maven-site-plugin.version>
<maven-stylus-skin.version>1.5</maven-stylus-skin.version>
<maven-antrun-plugin.version>3.1.0</maven-antrun-plugin.version>
<maven-assembly-plugin.version>3.6.0</maven-assembly-plugin.version>