docs(ngmodule): replace "swapped" by "replace"

closes #2076

Author: Dani723

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

@@ -548,7 +548,7 @@ a#feature-modules
     The `ContactModule` must import `FormsModule` explicitly so that
     `ContactComponent` can data bind with `ngModel`.
 :marked
-  We also swapped `CommonModule` for `BrowserModule` for reasons we explain [soon](#root-vs-feature-module).
+  We also replaced `BrowserModule` by `CommonModule` for reasons we explain [soon](#root-vs-feature-module).
 
   We _declare_ the contact component, directive, and pipe in the module `declarations`.