Improve javadoc for all addons (#15667)

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

bundles/org.openhab.binding.comfoair/src/main/java/org/openhab/binding/comfoair/internal/ComfoAirCommandType.java

@@ -780,7 +780,7 @@ public enum ComfoAirCommandType {
      *
      * @param key
      *            command key
-     * @param value
+     * @param command
      *            new state
      * @return initialized ComfoAirCommand
      */

bundles/org.openhab.binding.comfoair/src/main/java/org/openhab/binding/comfoair/internal/ComfoAirSerialConnector.java

@@ -68,7 +68,7 @@ public class ComfoAirSerialConnector {
     /**
      * Open serial port.
      *
-     * @throws PortInUseException, UnsupportedCommOperationException, IOException
+     * @throws ComfoAirSerialException
      */
     public void open() throws ComfoAirSerialException {
         logger.debug("open(): Opening ComfoAir connection");

bundles/org.openhab.binding.comfoair/src/main/java/org/openhab/binding/comfoair/internal/ComfoAirSerialException.java

@@ -15,7 +15,7 @@ package org.openhab.binding.comfoair.internal;
 import org.eclipse.jdt.annotation.NonNullByDefault;
 
 /**
- * The {@link ConnectException} is thrown on errors relating the serial connection.
+ * The {@link ComfoAirSerialException} is thrown on errors relating the serial connection.
  *
  * @author Hans Böhm - Initial contribution
  */