Fix typo in constant name

Issue rabbitmq#139

Author: acogoluegnes

src/com/rabbitmq/client/ConnectionFactory.java

@@ -82,7 +82,7 @@ public class ConnectionFactory implements Cloneable {
  * zero means wait indefinitely */
  public static final int DEFAULT_SHUTDOWN_TIMEOUT = 10000;
 
- private static final String PREFERED_TLS_PROTOCOL = "TLSv1.2";
+ private static final String PREFERRED_TLS_PROTOCOL = "TLSv1.2";
 
  private static final String FALLBACK_TLS_PROTOCOL = "TLSv1";
 
@@ -594,7 +594,7 @@ public void useSslProtocol(SSLContext context) {
  public static String computeDefaultTlsProcotol(String[] supportedProtocols) {
  if(supportedProtocols != null) {
  for (String supportedProtocol : supportedProtocols) {
- if(PREFERED_TLS_PROTOCOL.equalsIgnoreCase(supportedProtocol)) {
+ if(PREFERRED_TLS_PROTOCOL.equalsIgnoreCase(supportedProtocol)) {
  return supportedProtocol;
  }
  }