docs(arch,hier-dep,temp-syntax,toh-5): misc copyedits (#3375)

* docs(architecture): copyedit

Follow-up fix to
https://github.com/angular/angular.io/commit/e6741efd8f4fad20ca519d8eb99
ec0c7d102577d#commitcomment-21321447

* docs(hierarchical-dependency): copyedit

* doc(template-syntax): copyedits

* docs(toh-5): remove unnecessary block, trim whitespace

public/docs/ts/latest/guide/architecture.jade

@@ -252,7 +252,7 @@ block ts-decorator
     The `@Component` decorator takes a required configuration object with the
     information Angular needs to create and present the component and its view.
 
-    Here are a few of the most useful @Component configuration options:
+    Here are a few of the most useful `@Component` configuration options:
 
 :marked
   - `selector`: CSS selector that tells Angular to create and insert an instance of this component

public/docs/ts/latest/guide/hierarchical-dependency-injection.jade

@@ -115,6 +115,7 @@ figure.image-display
   Each selected hero tax return opens in its own component and multiple returns can be open at the same time.
 
   Each tax return component has the following characteristics:
+
   * Is its own tax return editing session.
   * Can change a tax return without affecting a return in another component.
   * Has the ability to save the changes to its tax return or cancel them.

public/docs/ts/latest/guide/template-syntax.jade

@@ -21,7 +21,7 @@ style.
 
 a#toc
 :marked
-  ### Table of contents
+  ### Contents
 
   This guide covers the basic elements of the Angular template syntax, elements you'll need to construct the view:
 
@@ -528,7 +528,6 @@ table(width="100%")
       <code>style</code> property
     td
       +makeExample('template-syntax/ts/src/app/app.component.html', 'style-binding-syntax-1')(format=".")
-</div>
 
 :marked
   With this broad view in mind, you're ready to look at binding types in detail.
@@ -699,7 +698,7 @@ a#one-time-initialization
 
 :marked
   Fortunately, Angular data binding is on alert for dangerous HTML.
-  It *sanitizes* the values before displaying them.
+  It [*sanitizes*](security#sanitization-and-security-contexts) the values before displaying them.
   It **will not** allow HTML with script tags to leak into the browser, neither with interpolation
   nor property binding.
 

public/docs/ts/latest/tutorial/toh-pt5.jade

@@ -863,9 +863,8 @@ block css-files
 
     +makeExcerpt('src/app/app.component.ts (active router links)', 'template')
 
-block style-urls
 :marked
-    Add a `styleUrls` property that points to this CSS file as follows.
+  Add a `styleUrls` property that refers to this CSS file as follows:
 
 +makeExcerpt('src/app/app.component.ts','styleUrls')