CSSTUDIO-2072 Update error message.

Author: abrahamwolk

app/databrowser/src/main/resources/org/csstudio/trends/databrowser3/messages.properties

@@ -268,7 +268,7 @@ StatisticsMin=Min Value
 StatisticsMax=Max Value
 StatisticsSum=Sum
 StatusColumn=Status
-TheClipboardDoesNotContainPVs=The clipboard doesn't contain a list of PV names:\n\n<PV Name1> <PV Name2> ...\n\nOptionally, a display name can be specified for a given PV name by putting the display name inside single quotes after a PV name:\n\n<PV Name 1> '<Display Name 1>' <PV Name 2> '<Display Name 2>' ...
+TheClipboardDoesNotContainPVs=The clipboard doesn't contain a list of PV names.
 TimeAxis=Time Axis
 TimeColumn=Time
 TitleFontLbl=Title Font: