[knx] Refine GA documentation (#16058)

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

diff --git a/bundles/org.openhab.binding.knx/README.md b/bundles/org.openhab.binding.knx/README.md
index 73b021e152772cbdbb4ccab0645f83e1807f0c5c..d5019aef1d892a4bc0b45081b2bfcc683a35dfca 100644 (file)
--- a/bundles/org.openhab.binding.knx/README.md
+++ b/bundles/org.openhab.binding.knx/README.md
@@ -235,7 +235,7 @@ For UoM support see the explanations of the `number` channel.
 #### Group Address Notation
 
 ```text
-<config>="[<dpt>:][<>]<mainGA>[[+[<]<listeningGA>][+[<]<listeningGA>..]]"
+<config>="[<dpt>:][<|>]<mainGA>[[+[<]<listeningGA>][+[<]<listeningGA>..]]"
 ```
 
 where parts in brackets `[]` denote optional information.