5.x migration guide: fix setter change example code

docs/guide.jade

@@ -21,7 +21,7 @@ block content
   .important
     :markdown
       If you haven't yet done so, please take a minute to read the [quickstart](./index.html) to get an idea of how Mongoose works.
-      If you are migrating from 4.x to 5.x please take a moment to read the [migration guide](https://github.com/Automattic/mongoose/blob/master/migrating_to_5.md).
+      If you are migrating from 4.x to 5.x please take a moment to read the [migration guide](/docs/migrating_to_5.html).
   :markdown
     <ul class="toc">
       <li><a href="#models">Defining your schema</a></li>

docs/migrating_to_5.jade

@@ -126,17 +126,17 @@ block content
     ```javascript
     const schema = new Schema({ name: String });
     schema.path('name').
-      get(() => console.log('This will print 2nd')).
-      get(() => console.log('This will print first'));
+      set(() => console.log('This will print 2nd')).
+      set(() => console.log('This will print first'));
     ```
 
     In 5.x, setters run in the order they're declared.
 
     ```javascript
     const schema = new Schema({ name: String });
     schema.path('name').
-      get(() => console.log('This will print first')).
-      get(() => console.log('This will print 2nd'));
+      set(() => console.log('This will print first')).
+      set(() => console.log('This will print 2nd'));
     ```
 
     <h3 id="id-getter"><a href="#id-getter">