Core module cannot be checked with stylish-haskell

This is because stylish-parser cannot parse the export list which starts
with
```hs
module Network.TypedProtocol.Core
  ( -- * Introduction
    -- $intro

    -- * Defining protocols
    -- $defining
    Protocol (..)
```

But this is required by haddock, to include the next section.

Author: coot

scripts/check-stylish.sh

@@ -5,6 +5,6 @@ export LC_ALL=C.UTF-8
 
 [[ -x '/usr/bin/fd' ]] && FD="fd" ||  FD="fdfind"
 
-$FD . './typed-protocols' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
+$FD . './typed-protocols' -e hs -E Setup.hs -E Core.hs -X stylish-haskell -c .stylish-haskell.yaml -i
 $FD . './typed-protocols-cborg' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
 $FD . './typed-protocols-examples' -e hs -E Setup.hs -E Channel.hs -X stylish-haskell -c .stylish-haskell.yaml -i