Update some references to finder options [ci skip]

Passing conditions to `find` was deprecated in Rails 4.0.

activerecord/lib/active_record/errors.rb

@@ -173,9 +173,9 @@ module ActiveRecord
   class RangeError < StatementInvalid
   end
 
-  # Raised when number of bind variables in statement given to +:condition+ key
-  # (for example, when using {ActiveRecord::Base.find}[rdoc-ref:FinderMethods#find] method)
-  # does not match number of expected values supplied.
+  # Raised when the number of placeholders in an SQL fragment passed to
+  # {ActiveRecord::Base.where}[rdoc-ref:QueryMethods#where]
+  # does not match the number of values supplied.
   #
   # For example, when there are two placeholders with only one value supplied:
   #

activerecord/lib/active_record/relation/finder_methods.rb

@@ -284,9 +284,9 @@ module ActiveRecord
     # * Integer - Finds the record with this primary key.
     # * String - Finds the record with a primary key corresponding to this
     #   string (such as <tt>'5'</tt>).
-    # * Array - Finds the record that matches these +find+-style conditions
+    # * Array - Finds the record that matches these +where+-style conditions
     #   (such as <tt>['name LIKE ?', "%#{query}%"]</tt>).
-    # * Hash - Finds the record that matches these +find+-style conditions
+    # * Hash - Finds the record that matches these +where+-style conditions
     #   (such as <tt>{name: 'David'}</tt>).
     # * +false+ - Returns always +false+.
     # * No args - Returns +false+ if the relation is empty, +true+ otherwise.