Improve javadoc for all addons (#15667)

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

bundles/org.openhab.binding.electroluxair/src/main/java/org/openhab/binding/electroluxair/internal/api/ElectroluxDeltaAPI.java

@@ -96,7 +96,6 @@ public class ElectroluxDeltaAPI {
             }
         } catch (JsonSyntaxException | ElectroluxAirException e) {
             logger.warn("Failed to refresh! {}", e.getMessage());
-
         }
         return false;
     }