removed trailing newline

fix from #10973 by @retr0h

lib/ansible/galaxy/data/metadata_template.j2

@@ -40,6 +40,6 @@ dependencies: []
   # List your role dependencies here, one per line.
   # Be sure to remove the '[]' above if you add dependencies
   # to this list.
-  {% for dependency in dependencies %}
+  {%- for dependency in dependencies %}
   #- {{ dependency }}
-  {% endfor %}
+  {%- endfor %}