unnecessary / prefix

[bencode]

`conventional-changelog -p angular -i CHANGELOG.md -o CHANGELOG.md -s

will output:

<a name="2.0.13"></a>
## [2.0.13](/http://gitlab.alibaba-inc.com/wing/wing-node/compare/v2.0.12...v2.0.13) (2016-04-01)

i check the angular template, @root.host is empty, and / that immediate after @root.host is unnecessary.

<a name="{{version}}"></a>
{{#if isPatch}}##{{else}}#{{/if}} {{#if @root.linkCompare}}[{{version}}]({{@root.host}}/{{#if @root.owner}}

[stevemao]

PR with test welcome :)