[modbus] Fix link to modbus developer documentation (#11277)

Resolves #8382

Signed-off-by: Sami Salonen <ssalonen@gmail.com>

diff --git a/bundles/org.openhab.binding.modbus/README.md b/bundles/org.openhab.binding.modbus/README.md
index 5f33a8d03bc9771808d2da50aa24fdbf7e397dee..b676b87a1dbf3b9d518be0e7ba03e284faabd045 100644 (file)
--- a/bundles/org.openhab.binding.modbus/README.md
+++ b/bundles/org.openhab.binding.modbus/README.md
@@ -1300,4 +1300,4 @@ Consult [openHAB logging documentation](https://www.openhab.org/docs/administrat
 ## For Developers
 
 This binding can be extended in many ways.
-If you have a Modbus enabled device that you want to support in openHAB please read the [developer section](DEVELOPERS.md).
+If you have a Modbus enabled device that you want to support in openHAB please read the [developer section](https://github.com/openhab/openhab-addons/blob/main/bundles/org.openhab.binding.modbus/DEVELOPERS.md).