fix formatting problems in the changelog

Changelog.md

@@ -3,25 +3,25 @@
 [full changelog](http://github.com/rspec/rspec-rails/compare/v2.6.1...v2.7.0)
 
 * Enhancments
-  * ActiveRecord::Relation can use the "=~" matcher (Andy Lindeman)
+  * `ActiveRecord::Relation` can use the `=~` matcher (Andy Lindeman)
   * Make generated controller spec more consistent with regard to ids
     (Brent J. Nordquist)
   * Less restrictive autotest mapping between spec and implementation files
     (José Valim)
-  * require 'rspec/autorun' from generated spec_helper.rb (David Chelimsky)
-  * bypass_rescue (Lenny Marks)
-  * route_to accepts query string (Marc Weil)
+  * `require 'rspec/autorun'` from generated `spec_helper.rb` (David Chelimsky)
+  * add `bypass_rescue` (Lenny Marks)
+  * `route_to` accepts query string (Marc Weil)
 
 * Internal
   * Added specs for generators using ammeter (Alex Rothenberg)
 
 * Bug fixes
   * Fix configuration/integration bug with rails 3.0 (fixed in 3.1) in which
-    fixure_file_upload reads from ActiveSupport::TestCase.fixture_path and misses
-    RSpec's configuration (David Chelimsky)
+    `fixure_file_upload` reads from `ActiveSupport::TestCase.fixture_path` and
+    misses RSpec's configuration (David Chelimsky)
   * Support nested resource in view spec generator (David Chelimsky)
-  * Define `primary_key` on class generated by mock_model("WithAString") (David
-    Chelimsky)
+  * Define `primary_key` on class generated by `mock_model("WithAString")`
+    (David Chelimsky)
 
 ### 2.6.1 / 2011-05-25