consistent formatting

Author: taylorotwell

validation.md

@@ -693,9 +693,9 @@ The field under validation must exist on a given database table.
 #### Basic Usage Of Exists Rule
 
     'state' => 'exists:states'
- 
-If the column parameter is not specified we will guess that the column that is being "verified" shares the given attribute's name.
-        
+
+If the `column` option is not specified, the field name will be used.
+
 #### Specifying A Custom Column Name
 
     'state' => 'exists:states,abbreviation'