Merge pull request symfony#483 from frost-nzcr4/book_doctrine

[book] doctrine.rst typos

Author: weaverryan

book/doctrine.rst

@@ -440,7 +440,7 @@ Once you have your repository, you have access to all sorts of helpful methods::
  // find *all* products
  $products = $repository->findAll();
 
- // find a group of products based on an abitrary column value
+ // find a group of products based on an arbitrary column value
  $products = $repository->findByPrice(19.99);
 
 .. note::
@@ -454,7 +454,7 @@ to easily fetch objects based on multiple conditions::
  // query for one product matching be name and price
  $product = $repository->findOneBy(array('name' => 'foo', 'price' => 19.99));
 
- // query for all prdocuts matching the name, ordered by price
+ // query for all products matching the name, ordered by price
  $product = $repository->findBy(
  array('name' => 'foo'),
  array('price', 'ASC')