Minor comment fix

Author: MaillPierre

src/main/java/fr/inria/corese/core/next/query/impl/parser/SparqlAstBuilder.java

@@ -74,8 +74,9 @@ public final class SparqlAstBuilder {
      */
     private Long limit;
     private Long offset;
+
     /**
-     * Order expression
+     * Order conditions
      */
     private final List<OrderConditionAst> orderConditions = new ArrayList<>();