Fix code tag nesting in commit webhooks

Author: tulir

base-config.yaml

@@ -247,7 +247,7 @@ messages:
         {% for commit in commits %}
             {% if commit.distinct %}
                 <li>
-                    <code><a href="{{ commit.url }}">{{ commit.id[:8] }}</a></code>
+                    <a href="{{ commit.url }}"><code>{{ commit.id[:8] }}</code></a>
                     {{ util.cut_message(commit.message)|e }}
                     {% if commit.author.username != sender.login %}
                         by {{ commit_user_link(commit.author) }}