Update link to Logger javadocs
Update link to Logger javadocs

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1786614 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: bbb5abed980863e718b593aa5231917398dfdb18
ham1/jmeter,ham1/jmeter,apache/jmeter,etnetera/jmeter,ham1/jmeter,benbenw/jmeter,benbenw/jmeter,etnetera/jmeter,etnetera/jmeter,etnetera/jmeter,apache/jmeter,benbenw/jmeter,benbenw/jmeter,apache/jmeter,ham1/jmeter,apache/jmeter,apache/jmeter,ham1/jmeter,etnetera/jmeter