[pre-commit.ci] auto fixes from pre-commit.com hooks

pre-commit-ci[bot] · pre-commit-ci[bot] · commit 77c7017c0ce5 · 2022-05-19T11:16:17.000Z
for more information, see https://pre-commit.ci
diff --git a/Makefile b/Makefile
@@ -16,11 +16,11 @@ clean: clean_doc clean_tests
 
 clean_doc:
 	cd docs && make clean
-	
 
-clean_tests: 
+
+clean_tests:
 	rm -rf coverage_html
-	rm -f coverage.xml	
+	rm -f coverage.xml
 	rm -f *.log
 
 version.txt: CITATION.cff
