Fix whitespace stripping in build.yml

Related to #636

Author: abelsiqueira

template/.github/workflows/{% if AddGitHubActionBuild %}build.yml{% endif %}.jinja

@@ -38,7 +38,7 @@ jobs:
       - name: Verify that we can build the package
         run: python -m build
 
-{%- if AddLinting -%}
+{%- if AddLinting %}
   lint:
     name: Linting build
     runs-on: ubuntu-latest
@@ -63,4 +63,4 @@ jobs:
         run: |
           ruff check
           ruff format --check
-{%- endif -%}
+{%- endif %}