docs(style-guide): fix some typos (missed one)

Author: wardbell

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

@@ -860,7 +860,7 @@ a(href="#toc") Back to top
 
 .s-why.s-why-last
   :marked
-    **Why?** We spend less time hunting and peeking for code, and become more efficient. If this means we want longer file names, then so be it.
+    **Why?** We spend less time hunting and pecking for code, and become more efficient. If this means we want longer file names, then so be it.
 
 .l-sub-section
   :marked
@@ -1876,7 +1876,8 @@ a(href="#toc") Back to top
 
 .s-why.s-why-last
   :marked
-    **Why?** We avoid unintentionally not calling the hook if we misspelled the method.
+    **Why?** We get strong typing for the method signatures. 
+    The compiler and editor can call our attention to misspellings.
 
 +makeExample('style-guide/ts/09-01/app/heroes/shared/hero-button/hero-button.component.avoid.ts', 'example', 'app/heroes/shared/hero-button/hero-button.component.ts')(avoid=1)
 :marked