Add minor fixes to comments and typos as per code reviewer suggestions

dd-java-agent/testing/src/test/groovy/context/FieldBackedProviderTest.groovy

@@ -1,6 +1,5 @@
 package context
 
-
 import datadog.trace.agent.test.AgentTestRunner
 import datadog.trace.agent.test.utils.ClasspathUtils
 import datadog.trace.api.Config

dd-java-agent/testing/testing.gradle

@@ -33,8 +33,8 @@ dependencies {
 
   testCompile project(':utils:gc-utils')
 
-  // test instrumenting java 1.1 bytecode
   testCompile group: 'cglib', name: 'cglib', version: '3.2.5'
+  // test instrumenting java 1.1 bytecode
   testCompile group: 'net.sf.jt400', name: 'jt400', version: '6.1'
 
   // We have autoservices defined in test subtree, looks like we need this to be able to properly rebuild this