MAPREDUCE-7165. mapred-site.xml is misformatted in single node setup document. Contributed by Zhaohui Xin.

(cherry picked from commit c9bfca217f4b15a3a367db51147d0dc2075ca274)

hadoop-common-project/hadoop-common/src/site/markdown/SingleCluster.md.vm

@@ -190,9 +190,6 @@ The following instructions assume that 1. ~ 4. steps of [the above instructions]
                 <name>mapreduce.framework.name</name>
                 <value>yarn</value>
             </property>
-        </configuration>
-
-        <configuration>
             <property>
                 <name>mapreduce.application.classpath</name>
                 <value>$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/*:$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/lib/*</value>