link to java.lang.Enum

Author: danthe1st

app/data/javadoc.json

@@ -1097,6 +1097,7 @@
   "Deque.push(E)":                                 "java.base/java/util/Deque.html#push(E)",
   "Deque.removeFirst()":                           "java.base/java/util/Deque.html#removeFirst()",
 
+  "Enum":                                          "java.base/java/lang/Enum.html",
   "Enumeration":                                   "java.base/java/util/Enumeration.html",
 
   "HashSet":                                       "java.base/java/util/HashSet.html",

app/pages/learn/01_tutorial/03_getting-to-know-the-language/04_classes_objects/01_enums.md

@@ -25,7 +25,7 @@ public enum DayOfWeek {
 }
 ```
 
-All enums implicitely extend `java.lang.Enum` and cannot have any subclasses.
+All enums implicitely extend [`java.lang.Enum`](javadoc:Enum) and cannot have any subclasses.
 
 ## Accessing and comparing enums
 The values of an enum can be used as constants.