Fix invalid character in Javadoc of BeanFactory

spring-beans/src/main/java/org/springframework/beans/factory/BeanFactory.java

@@ -239,7 +239,7 @@ public interface BeanFactory {
 	 * specific type, specify the actual bean type as an argument here and subsequently
 	 * use {@link ObjectProvider#orderedStream()} or its lazy streaming/iteration options.
 	 * <p>Also, generics matching is strict here, as per the Java assignment rules.
-	 * For lenient fallback matching with unchecked semantics (similar to the ´unchecked´
+	 * For lenient fallback matching with unchecked semantics (similar to the 'unchecked'
 	 * Java compiler warning), consider calling {@link #getBeanProvider(Class)} with the
 	 * raw type as a second step if no full generic match is
 	 * {@link ObjectProvider#getIfAvailable() available} with this variant.