Update Options javadoc (#420)

I _think_ this is the new default after
#370 ?

Author: martinbonnin

graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/tracing/FederatedTracingInstrumentation.java

@@ -467,9 +467,9 @@ public static class Options {
      *     "apollo-federation-include-trace" and value "ftv1", you must enable tracing for the
      *     request, and it is your responsibility to augment your {@link ExecutionInput} or its
      *     context to contain the information necessary for this predicate to have the above
-     *     behavior. The default/null behavior is to enable trace generation unless the
-     *     GraphQLContext map contains "apollo-federation-include-trace" entry with a value other
-     *     than "ftv1"
+     *     behavior. The default/null behavior is to disable trace generation unless the
+     *     GraphQLContext map contains "apollo-federation-include-trace" entry with a value equal to
+     *     "ftv1"
      */
     public Options(
         boolean debuggingEnabled, @Nullable Predicate<ExecutionInput> shouldTracePredicate) {