Fix MethodParameter nestingLevel documentation

Closes gh-36826

(cherry picked from commit 3e58583)

Author: jhoeller

spring-core/src/main/java/org/springframework/core/MethodParameter.java

@@ -121,8 +121,8 @@ public MethodParameter(Method method, int parameterIndex) {
 	 * return type; 0 for the first method parameter; 1 for the second method
 	 * parameter, etc.
 	 * @param nestingLevel the nesting level of the target type
-	 * (typically 1; for example, in case of a List of Lists, 1 would indicate the
-	 * nested List, whereas 2 would indicate the element of the nested List)
+	 * (1 for the top-level type; in case of a List of Lists, 2 would indicate
+	 * the nested List, whereas 3 would indicate the element of the nested List)
 	 */
 	public MethodParameter(Method method, int parameterIndex, int nestingLevel) {
 		Assert.notNull(method, "Method must not be null");
@@ -145,8 +145,8 @@ public MethodParameter(Constructor<?> constructor, int parameterIndex) {
 	 * @param constructor the Constructor to specify a parameter for
 	 * @param parameterIndex the index of the parameter
 	 * @param nestingLevel the nesting level of the target type
-	 * (typically 1; for example, in case of a List of Lists, 1 would indicate the
-	 * nested List, whereas 2 would indicate the element of the nested List)
+	 * (1 for the top-level type; in case of a List of Lists, 2 would indicate
+	 * the nested List, whereas 3 would indicate the element of the nested List)
 	 */
 	public MethodParameter(Constructor<?> constructor, int parameterIndex, int nestingLevel) {
 		Assert.notNull(constructor, "Constructor must not be null");
@@ -296,8 +296,8 @@ public void decreaseNestingLevel() {
 
 	/**
 	 * Return the nesting level of the target type
-	 * (typically 1; for example, in case of a List of Lists, 1 would indicate the
-	 * nested List, whereas 2 would indicate the element of the nested List).
+	 * (1 for the top-level type; in case of a List of Lists, 2 would indicate
+	 * the nested List, whereas 3 would indicate the element of the nested List).
 	 */
 	public int getNestingLevel() {
 		return this.nestingLevel;