docs(structural-directives): typos and clean-up

public/docs/ts/latest/guide/structural-directives.jade

@@ -5,13 +5,13 @@ block includes
   One of the defining features of a single page application is its manipulation
   of the DOM tree. Instead of serving a whole new page every time a user
   navigates, whole sections of the DOM appear and disappear according
-  to the application state. In this chapter we'll to look at how Angular
+  to the application state. In this chapter we'll look at how Angular
   manipulates the DOM and how we can do it ourselves in our own directives.
 
   In this chapter we will
   - [learn what structural directives are](#definition)
   - [study *ngIf*](#ngIf)
-  - [discover the <template> element](#template)
+  - [discover the <template> element](#template)
   - [understand the asterisk (\*) in **ngFor*](#asterisk)
   - [write our own structural directive](#unless)
 
@@ -48,7 +48,7 @@ block includes
 :marked
   ## NgIf Case Study
 
-  Let’s focus on `ngIf`. It's a great example of a structural
+  Let's focus on `ngIf`. It's a great example of a structural
   directive: it takes a boolean and makes an entire chunk of DOM appear
   or disappear.
 
@@ -72,9 +72,9 @@ figure.image-display
   the component's behavior continues.
   It remains attached to its DOM element. It continues to listen to events.
   Angular keeps checking for changes that could affect data bindings.
-  Whatever the component was doing it keeps doing.
+  Whatever the component was doing, it keeps doing it.
 
-  Although invisible, the component &mdash; and all of its descendent components &mdash;
+  Although invisible, the component &mdash; and all of its descendant components &mdash;
   tie up resources that might be more useful elsewhere.
   The performance and memory burden can be substantial and the user may not benefit at all.
 
@@ -143,7 +143,7 @@ figure.image-display
   a heavy price to create and destroy it.
 
   If we really expected to "wink" the component like this, toggling visibility would be the better choice.
-  In most UIs, when we "close" a component we're unlikely see it again for a long time, if ever.
+  In most UIs, when we "close" a component we're unlikely to see it again for a long time, if ever.
   The `ngIf` would be preferred in that case.
 
 <a id="template"></a>
@@ -209,7 +209,7 @@ figure.image-display
 
 +makeExample('structural-directives/ts/app/structural-directives.component.html', 'ngFor-template')(format=".")
 :marked
-  The basic pattern is the same:&nbsp; create a `<template>`, relocate the content,
+  The basic pattern is the same: create a `<template>`, relocate the content,
   and move the directive onto the `<template>`.
 
   There are extra nuances stemming from