Update documentation for slow call thresholds

Author: newtork

cloudplatform/resilience-api/src/main/java/com/sap/cloud/sdk/cloudplatform/resilience/ResilienceConfiguration.java

@@ -477,6 +477,8 @@ public static final class CircuitBreakerConfiguration
          * The duration threshold above which calls are considered as slow and increase the slow call rate. When the
          * percentage of slow calls is equal to or greater than {@link #slowCallRateThreshold}, the CircuitBreaker
          * transitions to <i>OPEN</i> and starts short-circuiting calls.
+         *
+         * @since 5.29.0
          */
         @Nonnull
         private Duration slowCallDurationThreshold = DEFAULT_SLOW_CALL_DURATION_THRESHOLD;
@@ -486,6 +488,8 @@ public static final class CircuitBreakerConfiguration
          * when the call duration is greater than {@link #slowCallDurationThreshold}. When the percentage of slow calls
          * is equal to or greater than the threshold, the CircuitBreaker transitions to <i>OPEN</i> and starts
          * short-circuiting calls.
+         *
+         * @since 5.29.0
          */
         private float slowCallRateThreshold = DEFAULT_SLOW_CALL_RATE_THRESHOLD;