chore: update CHANGELOG template

Author: ymgyt

cliff.toml

@@ -22,8 +22,8 @@ body = """
 {% for group, commits in commits | group_by(attribute="group") %}
     ### {{ group | upper_first }}
     {% for commit in commits %}
-        - {% if commit.breaking %}[**breaking**] {% endif %}{{ commit.message | upper_first }}\
-    {% endfor %}
+        - {{ commit.message | upper_first }} by @{{ commit.author.name}} 
+    {%- endfor %}
 {% endfor %}\n
 """
 # remove the leading and trailing whitespace from the template