Fix typo in ImportCandidates javadoc

See gh-31277

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/annotation/ImportCandidates.java

@@ -61,7 +61,7 @@ public Iterator<String> iterator() {
 	 * Loads the names of import candidates from the classpath.
 	 *
 	 * The names of the import candidates are stored in files named
-	 * {@code META-INF/spring/full-qualified-annotation-name.import} on the classpath.
+	 * {@code META-INF/spring/full-qualified-annotation-name.imports} on the classpath.
 	 * Every line contains the full qualified name of the candidate class. Comments are
 	 * supported using the # character.
 	 * @param annotation annotation to load