Javadoc formatting fix

Author: jhalterman

src/main/java/dev/failsafe/RateLimiter.java

@@ -36,6 +36,8 @@
  *   <li>{@link #tryAcquirePermit(Duration)}</li>
  *   <li>{@link #tryAcquirePermits(int, Duration)}</li>
  * </ul>
+ * </p>
+ * <p>
  * The methods that return immediately include:
  * <ul>
  *   <li>{@link #tryAcquirePermit()}</li>

src/main/java/dev/failsafe/RateLimiterConfig.java

@@ -17,6 +17,12 @@
 
 import java.time.Duration;
 
+/**
+ * Configuration for a {@link RateLimiter}.
+ *
+ * @param <R> result type
+ * @author Jonathan Halterman
+ */
 public class RateLimiterConfig<R> extends PolicyConfig<R> {
   // Smoothing
   Duration maxRate;