Added text for the Synchronized annotation to the features pages. Also did some fixes in regards to whitespacing (some fancy footwork in regards to white-space: pre).

usage_examples/SynchronizedExample_pre.jpage

@@ -0,0 +1,20 @@
+import lombok.Synchronized;
+
+public class SynchronizedExample {
+	private final Object myLock = new Object();
+	
+	@Synchronized
+	public static void hello() {
+		System.out.println("world");
+	}
+	
+	@Synchronized
+	public int answerToLife() {
+		return 42;
+	}
+	
+	@Synchronized("myLock")
+	public void foo() {
+		System.out.println("bar");
+	}
+}