Use newer way of excluding lines from coverage

This is a follow-up on commit a1c687f.

Author: bittner

examples/argparse/pyproject.toml

@@ -43,7 +43,7 @@ homepage = "{{url}}"
 source = ["{{module}}"]
 
 [tool.coverage.report]
-exclude_lines = ["if __name__ == .__main__.:"]
+exclude_only = ["if __name__ == .__main__.:"]
 show_missing = true
 skip_covered = true
 

examples/click/pyproject.toml

@@ -44,7 +44,7 @@ homepage = "{{url}}"
 source = ["{{module}}"]
 
 [tool.coverage.report]
-exclude_lines = ["if __name__ == .__main__.:"]
+exclude_only = ["if __name__ == .__main__.:"]
 show_missing = true
 skip_covered = true
 

examples/docopt/pyproject.toml

@@ -44,7 +44,7 @@ homepage = "{{url}}"
 source = ["{{module}}"]
 
 [tool.coverage.report]
-exclude_lines = ["if __name__ == .__main__.:"]
+exclude_only = ["if __name__ == .__main__.:"]
 show_missing = true
 skip_covered = true