Fix doc formatting for `count_by_sql`

Before:

![before](https://cloud.githubusercontent.com/assets/10076/5592809/25ce08e8-9199-11e4-9dfe-5baa8bd6b658.png)

After:

![after](https://cloud.githubusercontent.com/assets/10076/5592810/25ceef9c-9199-11e4-88f4-d286203d7f6f.png)

[ci skip]

1 files changed, 4 insertions, 3 deletions

diff --git a/activerecord/lib/active_record/querying.rb b/activerecord/lib/active_record/querying.rb
index e8de4db3a7..91c9a0db99 100644
--- a/activerecord/lib/active_record/querying.rb
+++ b/activerecord/lib/active_record/querying.rb
@@ -55,11 +55,12 @@ module ActiveRecord
     # The use of this method should be restricted to complicated SQL queries that can't be executed
     # using the ActiveRecord::Calculations class methods. Look into those before using this.
     #
-    # ==== Parameters
+    #   Product.count_by_sql "SELECT COUNT(*) FROM sales s, customers c WHERE s.customer_id = c.id"
+    #   # => 12
     #
-    # * +sql+ - An SQL statement which should return a count query from the database, see the example below.
+    # ==== Parameters
     #
-    #   Product.count_by_sql "SELECT COUNT(*) FROM sales s, customers c WHERE s.customer_id = c.id"
+    # * +sql+ - An SQL statement which should return a count query from the database, see the example above.
     def count_by_sql(sql)
       sql = sanitize_conditions(sql)
       connection.select_value(sql, "#{name} Count").to_i