[repo-helper] Configuration Update (#7)

* Updated files with 'repo_helper'.

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

for more information, see https://pre-commit.ci

Co-authored-by: repo-helper[bot] <74742576+repo-helper[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

doc-source/extensions/index.rst

@@ -53,4 +53,3 @@ Some features must be enabled separately:
 
 	I.e. ``foo.bar.baz()`` became ``foo.bar.foo.bar.baz()``, which of course doesn't exist
 	and so resulted in a broken link.
-

doc-source/index.rst

@@ -120,7 +120,7 @@ Installation
 	:pypi:
 	:github:
 	:anaconda:
-	:conda-channels: domdfcoding,conda-forge
+	:conda-channels: domdfcoding, conda-forge
 
 .. end installation