docs: fix typo

closes #916
change `throught` to `through` in TS tutorial

Author: jnizet

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

@@ -66,7 +66,7 @@ table(width="100%")
   We don't have to read the guide straight through.  Most chapters stand on their own. 
 
   We recommend a learning path for those new to Angular. 
-  Most of that path runs throught the *Basics* section:
+  Most of that path runs through the *Basics* section:
 
   1. Read the [Architecture Overview](architecture.html) to get the big picture.