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

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

Author: pre-commit-ci[bot]

repo2docker/buildpacks/r.py

@@ -420,7 +420,10 @@ def get_assemble_scripts(self):
         description_R = "DESCRIPTION"
         if not self.binder_dir and os.path.exists(description_R):
             assemble_scripts += [
-                ("${NB_USER}", 'R --vanilla --quiet -e "devtools::install_local(getwd())"')
+                (
+                    "${NB_USER}",
+                    'R --vanilla --quiet -e "devtools::install_local(getwd())"',
+                )
             ]
 
         return assemble_scripts