Update CHANGELOG format

CHANGELOG.md

@@ -1,19 +1,23 @@
-## v1.1.0:
+openvpn Cookbook CHANGELOG
+==========================
+This file is used to list changes made in each version of the openvpn cookbook.
 
-* [COOK-1231] - dont use up script if security isnt >1
-* [COOK-2513] Changed user and group to attributes
 
-## v1.0.2:
+v1.1.0
+------
+- [COOK-1231] - dont use up script if security isnt >1
+- [COOK-2513] Changed user and group to attributes
 
-* [COOK-2288] - make attribute assignment in openvpn::default
-  compatible w/ Chef 11
+v1.0.2
+------
+- [COOK-2288] - make attribute assignment in openvpn::default compatible w/ Chef 11
 
-## v1.0.0:
+v1.0.0
+------
+- [COOK-1171] - use proper key size
+- [COOK-1231] - add script_security attribute
 
-* [COOK-1171] - use proper key size
-* [COOK-1231] - add script_security attribute
-
-## v0.99.2:
-
-* [COOK-564] - fix users recipe search, add port attribute
-* [COOK-621] - rename attribute "push" to "routes" - see below.
+v0.99.2
+-------
+- [COOK-564] - fix users recipe search, add port attribute
+- [COOK-621] - rename attribute "push" to "routes" - see below.