Ignore setup.cfg in pre-commit's Trailing Whitespace. (#602)

* Ignore setup.cfg in pre-commit's EOF Fixer.

* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci

* Properly exclude setup.cfg in trailing-whitespace

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -14,6 +14,7 @@ repos:
     - id: check-yaml
     - id: end-of-file-fixer
     - id: trailing-whitespace
+      exclude: 'setup.cfg'
 - repo: https://github.com/psf/black
   rev: 21.9b0
   hooks:

setup.cfg

@@ -9,15 +9,15 @@ tag_name = {new_version}
 omit = gmso/tests/*
 
 [coverage:report]
-exclude_lines = 
+exclude_lines =
 	pragma: no cover
-	
+
 	def __repr__
 	def __str__
 	except ImportError
 	if 0:
 	if __name__ == .__main__.:
-omit = 
+omit =
 	gmso/tests/*
 
 [bumpversion:file:gmso/__init__.py]