[ism8] Fix broken image in docs (#17175)

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

diff --git a/bundles/org.openhab.binding.ism8/README.md b/bundles/org.openhab.binding.ism8/README.md
index c1fc5666d3ee6ddf16da9b84e7ad7a7e5435ce3f..a6d1865a8ea4f36ebb2db7a60f0f88504e0048dc 100644 (file)
--- a/bundles/org.openhab.binding.ism8/README.md
+++ b/bundles/org.openhab.binding.ism8/README.md
@@ -195,4 +195,4 @@ NULL=Undefiniert
 ```
 
 _Result_
-<img src="doc/Sitemap-Example.png" width="800" height="600">
+<img src="./doc/Sitemap-Example.png" width="800" height="600">