docs(cb-a11y): Applying small obvious textual fixes.

Author: AlmeroSteyn

public/docs/ts/latest/cookbook/_data.json

@@ -12,7 +12,7 @@
   },
 
   "a11y": {
-    "title": "Angular 2 ARIA / Accessibility (a11y) reference",
+    "title": "ARIA / Accessibility (a11y) reference",
     "navTitle": "ARIA / Accessibility (a11y)",
     "intro": "Learn how to make your Angular 2 sites accessible for everyone"
   },

public/docs/ts/latest/cookbook/a11y.jade

@@ -2,8 +2,8 @@ include ../_util-fns
 
 :marked
     Welcome, you are about to learn some key concepts that will make your Angular 2 application accessible for
-    as many people as possible. This is now small goal, there is a large group of people out there who find it
-    very hard to simply impossible to use your applications without thinking about the concepts mentioned here.
+    as many people as possible. This is no small goal, there is a large group of people out there who find it
+    very hard or even impossible to use your applications without thinking about the concepts mentioned here.
 
     We would like to show you that this can often be achieved with little to no extra effort on your part
     if you bring these concepts right into the design phase of your application.
@@ -12,17 +12,17 @@ include ../_util-fns
 
     If you are seeing the concepts `Web Accessibility`, `ARIA` or `a11y` for the first time, you are at the start of an
     incredible journey. And for those who already enjoy the benefits of `Accessible Web Applications`, we will
-    show you how to apply your knowlegde in the new and exciting world of Angular 2.
+    show you how to apply your knowledge in the new and exciting world of Angular 2.
 
 :marked
     ## A11y in a nutshell
 
     `Accessibility` is often referred to as `a11y`. This is because we want to say as lot while writing less. And
-    as it has eleven letters, startes with an `a` and ends with a `y`, we shorten this word to `a11y`. We will
+    as it has eleven letters, starts with an `a` and ends with a `y`, we shorten this word to `a11y`. We will
     refer to `a11y` when we actually want to say `accessibility`.
 
-    In short, `a11y` refers to creating web applications that everyone, including those with disabilities that would
-    normally make web navigation hard or impossible, can use our entire web application and enjoy the full function.
+    In short, `a11y` refers to creating web applications that everyone can use, including those with disabilities that would
+    ke web navigation hard or impossible when these principles are not applied.
 
     If you are totally new to the concept you may want to have a look at what the folks are the `W3C` have to say about
     [a11y](http://www.w3.org/WAI/intro/accessibility.php) to put the rest of the article into perspective. We will be