Fix typos.

Author: postmodern

documentation/quickstart/2/index.md

@@ -118,4 +118,4 @@ Greeter and a bunch of methods for that class. Also notice `@name`.
 This is an instance variable, and is available to all the methods of
 the class. As you can see it’s used by `say_hi` and `say_bye`.
 
-So how do we get this Greeter class set in motion? [Create an object.](../3/")
+So how do we get this Greeter class set in motion? [Create an object.](../3/)

documentation/quickstart/3/index.md

@@ -40,7 +40,7 @@ Hmm, what if we want to get at the name directly?
 
 Nope, can’t do it.
 
-## Under the Object&#8217;s Skin<
+## Under the Object&#8217;s Skin
 
 Instance variables are hidden away  inside the object. They&#8217;re not
 terribly hidden, you see them whenever you inspect the  object, and there

documentation/quickstart/index.md

@@ -16,7 +16,7 @@ header: |
   
 ---
 
-## Introduction<
+## Introduction
 
 
 This is a small Ruby tutorial that should take no more than 20 minutes to