Polishing.

Improve wording.

Original pull request #3438

src/main/java/org/springframework/data/util/KotlinReflectionUtils.java

@@ -169,7 +169,7 @@ public final class KotlinReflectionUtils {
 	}
 
 	/**
-	 * Returns {@literal true} whether the given {@link MethodParameter} is nullable. Its declaring method can reference a
+	 * Returns whether the given {@link MethodParameter} is nullable. Its declaring method can reference a
 	 * Kotlin function, property or interface property.
 	 *
 	 * @return {@literal true} if {@link MethodParameter} is nullable.

src/main/java/org/springframework/data/util/ReflectionUtils.java

@@ -479,7 +479,7 @@ public final class ReflectionUtils {
 	}
 
 	/**
-	 * Returns {@literal true} whether the given {@link MethodParameter} is nullable. Nullable parameters are reference types
+	 * Returns whether the given {@link MethodParameter} is nullable. Nullable parameters are reference types
 	 * and ones that are defined in Kotlin as such.
 	 *
 	 * @return {@literal true} if {@link MethodParameter} is nullable.