Fixes History.md links to version diffs.

diff --git a/History.md b/History.md
index 03bdd82..394ebb9 100644 (file)
--- a/History.md
+++ b/History.md
@@ -3,13 +3,13 @@
 
 * Fixed issue [#297](https://github.com/GoalSmashers/clean-css/issues/297) - box-shadow zeros minification.
 
-[2.2.1 / 2014-06-14](https://github.com/GoalSmashers/clean-css/compare/v2.2.0...2.2.1)
+[2.2.1 / 2014-06-14](https://github.com/GoalSmashers/clean-css/compare/v2.2.0...v2.2.1)
 ==================
 
 * Fixes new property optimizer for 'none' values.
 * Fixed issue [#294](https://github.com/GoalSmashers/clean-css/issues/294) - space after rgba/hsla in IE<=11.
 
-[2.2.0 / 2014-06-11](https://github.com/GoalSmashers/clean-css/compare/v2.1.8...2.2.0)
+[2.2.0 / 2014-06-11](https://github.com/GoalSmashers/clean-css/compare/v2.1.8...v2.2.0)
 ==================
 
 * Adds a better algorithm for quotation marks' removal.