Update fortran-lint/README.md

Co-authored-by: Yaswant Pradhan <2984440+yaswant@users.noreply.github.com>

Author: Pierre-siddall

fortran-lint/README.md

@@ -25,6 +25,7 @@ In order to use this reusable workflow you should implement a calling workflow a
 a YAML file in your `.github/workflows` directory containing the follwing:
 
 ### Example usage in caller workflow
+
 ```yaml
 steps:
   - name: Lint Fortran