pep8: Add compliance with rule E261 to replace-tarball-shebang.

tools/replace-tarball-shebang

@@ -19,7 +19,7 @@ new_shebang_bytes = new_shebang.encode()
 
 with tarfile.open(fileobj=stdin, mode='r|*') as in_tar, \
         tarfile.open(fileobj=stdout, mode='w', format=tarfile.PAX_FORMAT, pax_headers=in_tar.pax_headers) as out_tar:
-    for info in in_tar: # type: ignore # https://github.com/python/typeshed/pull/693
+    for info in in_tar:  # type: ignore # https://github.com/python/typeshed/pull/693
         if info.isfile():
             file = in_tar.extractfile(info)
             data = file.read()