chore: update clog template to use sentence casing (coder#258)

Katie Horne · web-flow · commit fef153a08eca · 2021-04-08T13:25:10.000-05:00
diff --git a/scripts/template_changelog.md b/scripts/template_changelog.md
@@ -3,18 +3,18 @@ title: "<% X.Y.Z %>"
 description: "Released on <% MM/DD/YYYY %>"
 ---
 
-### Breaking Changes ❗
+### Breaking changes ❗
 
 There are no breaking changes in <% X.Y.Z %>.
 
 ### Features ✨
 
 There are no new features in <% X.Y.Z %>.
 
-### Bug Fixes 🐛
+### Bug fixes 🐛
 
 There are no bug fixes in <% X.Y.Z %>.
 
-### Security Updates 🔐
+### Security updates 🔐
 
 There are no security updates in <% X.Y.Z %>.
