fix black

Author: tsvikas

project_name/README.md.jinja

@@ -4,7 +4,7 @@
 [![Documentation Status][rtd-badge]][rtd-link]
 [![uv][uv-badge]][uv-link]
 [![Ruff][ruff-badge]][ruff-link]
-{-% if format_tool == "black" %}
+{%- if format_tool == "black" %}
 [![Black][black-badge]][black-link]
 {%- endif %}