Polish Javadoc for core retry functionality

See gh-34716

spring-core/src/main/java/org/springframework/core/retry/RetryExecution.java

@@ -20,6 +20,9 @@ package org.springframework.core.retry;
  * Strategy interface to define a retry execution created for a given
  * {@link RetryPolicy}.
  *
+ * <p>A {@code RetryExecution} is effectively an executable instance of a given
+ * {@code RetryPolicy}.
+ *
  * <p>Implementations may be stateful but do not need to be thread-safe.
  *
  * @author Mahmoud Ben Hassine

spring-core/src/main/java/org/springframework/core/retry/RetryTemplate.java

@@ -66,6 +66,7 @@ public class RetryTemplate implements RetryOperations {
 	protected RetryListener retryListener = new RetryListener() {
 	};
 
+
 	/**
 	 * Create a new {@code RetryTemplate} with maximum 3 retry attempts and a
 	 * fixed backoff of 1 second.
@@ -95,6 +96,7 @@ public class RetryTemplate implements RetryOperations {
 		this.backOffPolicy = backOffPolicy;
 	}
 
+
 	/**
 	 * Set the {@link RetryPolicy} to use.
 	 * <p>Defaults to {@code new MaxRetryAttemptsPolicy()}.
@@ -108,7 +110,7 @@ public class RetryTemplate implements RetryOperations {
 
 	/**
 	 * Set the {@link BackOff} policy to use.
-	 * <p>Defaults to {@code new FixedBackOff(1000, Long.MAX_VALUE))}.
+	 * <p>Defaults to {@code new FixedBackOff(Duration.ofSeconds(1))}.
 	 * @param backOffPolicy the backoff policy to use
 	 * @see FixedBackOff
 	 */

spring-core/src/main/java/org/springframework/core/retry/support/package-info.java

@@ -1,5 +1,5 @@
 /**
- * Support package for the core retry functionality containing common retry policies.
+ * Support package for the core retry functionality.
  */
 @NullMarked
 package org.springframework.core.retry.support;