Update vnodes.md

docs/vnodes.md

@@ -116,7 +116,7 @@ When creating libraries that emit vnodes, you should use this module instead of
 
 Vnodes are supposed to represent the state of the DOM at a certain point in time. Mithril.js's rendering engine assumes a reused vnode is unchanged, so modifying a vnode that was used in a previous render will result in undefined behavior.
 
-It is possible to reuse vnodes in place to prevent a diff, but it's preferable to use the [`onbeforeupdate`](lifecycle.md#onbeforeupdate). 
+It is possible to reuse vnodes in place to prevent a diff, but it's preferable to use the [`onbeforeupdate`](lifecycle-methods.md#onbeforeupdate). 
 
 #### Avoid passing model data directly to components via attributes
 
@@ -174,4 +174,4 @@ var BetterListComponent = {
  }))
  }
 }
-```
+```