minor: whitespace and line brekas

Author: Sam Kleinman

source/includes/example-addToSet-each.rst

@@ -12,12 +12,16 @@ with the :update:`$each` modifier to add multiple elements to the
 
    db.inventory.update(
                        { _id: 2 },
-                       { $addToSet: { tags: {$each: [ "camera", "electronics", "accessories" ] } } }
+                       { $addToSet: { tags: { $each: [ "camera",
+                                                       "electronics", 
+                                                       "accessories" ] } } }
                       )
 
 The operation adds only ``"camera"`` and ``"accessories"`` to the
 ``tags`` array since ``"electronics"`` already exists in the array:
 
 .. code-block:: javascript
 
-   { _id: 2, item: "cable", tags: [  "electronics",  "supplies",  "camera",  "accessories" ] }
+   { _id: 2, 
+     item: "cable", 
+     tags: [  "electronics",  "supplies",  "camera",  "accessories" ] }