chore: fix CHANGELOG template link

Author: ymgyt

cliff.toml

@@ -22,7 +22,7 @@ body = """
 {% for group, commits in commits | group_by(attribute="group") %}
     ### {{ group | striptags | upper_first }}
     {% for commit in commits %}
-        - {{ commit.message | upper_first }} by @{{ commit.author.name}} ([{{ commit.id | truncate(length=8, end="") }}]({{ commit.id }}))
+        - {{ commit.message | upper_first }} by [@{{ commit.author.name}}](https://github.com/{{ commit.author.name }}) ([{{ commit.id | truncate(length=8, end="") }}](https://github.com/ymgyt/syndicationd/commit/{{ commit.id }}))
     {%- endfor %}
 {% endfor %}\n
 """