[mqtt.generic] Update README.md (#9881)

Correct grammar in troubleshooting section

diff --git a/bundles/org.openhab.binding.mqtt.generic/README.md b/bundles/org.openhab.binding.mqtt.generic/README.md
index 6bac6e4d9057aa51d9ee871c44b3c71d4dfbcd7d..891b931fa06f4db461e52b2cf0b2967b2284e161 100644 (file)
--- a/bundles/org.openhab.binding.mqtt.generic/README.md
+++ b/bundles/org.openhab.binding.mqtt.generic/README.md
@@ -286,4 +286,4 @@ Any outgoing value transformation will **always** result in a __string__ value.
 ## Troubleshooting
 
 * If you get the error "No MQTT client": Please update your installation.
-* If you use the Mosquitto broker: Please be aware that there is a relatively low setting for retained messages. At some point messages will just not being delivered anymore: Change the setting. 
+* If you use the Mosquitto broker: Please be aware that there is a relatively low setting for retained messages. If at some point messages stop being delivered change the setting.