fix javadoc

x-pack/plugin/ql/src/main/java/org/elasticsearch/xpack/ql/planner/ExpressionTranslators.java

@@ -333,7 +333,7 @@ static Query translate(BinaryComparison bc, TranslatorHandler handler, Dispatche
         }
 
         /**
-         * Represents a function which maps between an expression type and a query type, in a given translation context.
+         * Represents a function which maps between a {@link BinaryComparison} type and a query type, in a given translation context.
          */
         @FunctionalInterface
         public interface Dispatcher {