chore: fix a few standing typos (#3280)

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

@@ -131,7 +131,7 @@ l-main-section
 
   Your initial app has only a single module, the _root_ module.
   As your app grows, you'll consider subdividing it into multiple "feature" modules,
-  so of which can be loaded later ("lazy loaded") if and when the user chooses
+  some of which can be loaded later ("lazy loaded") if and when the user chooses
   to visit those features.
 
   When you're ready to explore these possibilities, visit the [Angular Modules (NgModule)](ngmodule.html) guide.

public/docs/ts/latest/guide/reactive-forms.jade

@@ -177,7 +177,7 @@ a#create-component
 
 :marked
   The `moduleId: module.id` lets you use 
-  [component-relative paths](./cookbook/component-relative-paths.html) in file URLs 
+  [component-relative paths](../cookbook/component-relative-paths.html) in file URLs 
   such as when specifying the `templateUrl`.
 
   Next, create an exported `HeroDetailComponent` class with a `FormControl`. 

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

@@ -2416,7 +2416,7 @@ h3#can-load-guard <i>CanLoad Guard</i>: guarding unauthorized loading of feature
   It redirects to the  login page if the user is not authorized.
   
   But the router is still loading the `AdminModule` even if the user can't visit any of its components.
-  Ideally, you's only load the `AdminModule` if the user is logged in.
+  Ideally, you'd only load the `AdminModule` if the user is logged in.
 
   Add a **`CanLoad`** guard that only loads the `AdminModule` once the user is logged in _and_ attempts to access the admin feature area.
 

public/docs/ts/latest/guide/style-guide.jade

@@ -181,7 +181,7 @@ a(href="#toc") Back to top
 
 .s-why
   :marked
-    **Why?** The naming conventions should simply help find desited code faster and make it easier to understand.
+    **Why?** The naming conventions should simply help find desired code faster and make it easier to understand.
 
 .s-why.s-why-last
   :marked

public/docs/ts/latest/tutorial/toh-pt6.jade

@@ -416,7 +416,7 @@ block observables-section-intro
 +ifDocsFor('ts')
   :marked
     A more important difference: we no longer call `toPromise`.
-    Instead we return the *observable* from the the `htttp.get`, 
+    Instead we return the *observable* from the the `http.get`, 
     after chaining it to another RxJS operator, <code>map</code>, 
     to extract heroes from the response data.