Fix typo in setup.cfg (#1953)

Author: parthvnp

setup.cfg

@@ -2,7 +2,7 @@
 disallow_untyped_defs = True
 ignore_missing_imports = True
 follow_imports = silent
-# NOTE: If you are seing this, feel free to create a PR to cover the below files.
+# NOTE: If you are seeing this, feel free to create a PR to cover the below files.
 exclude = (?x)
   ^(
     |tests/supervisors/test_reload.py