highcharter-helper: improve handling of single query terms

Change-Id: I057f88c5bdf100cc1464b7a2c211db7a41e228c5
diff --git a/DESCRIPTION b/DESCRIPTION
index e933c1d..29c3893 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: RKorAPClient
 Type: Package
 Title: 'KorAP' Web Service Client Package
-Version: 0.5.5.9001
+Version: 0.5.5.9002
 Authors@R:
     c(person(given = "Marc",
              family = "Kupietz",