flake: Attempt to run doctests

Reviewed-by: Alexander Kobjolke <me@failco.de>

hcat.cabal

@@ -47,7 +47,6 @@ executable hcat
   build-depends:
       base >=4.13 && <5
     , hcat
-    , text
   default-language: GHC2021
 
 test-suite spec
@@ -57,7 +56,7 @@ test-suite spec
       HCatSpec
       Paths_hcat
   hs-source-dirs:
-      test
+      test/spec
   default-extensions:
       BlockArguments
       OverloadedStrings
@@ -71,7 +70,4 @@ test-suite spec
     , base >=4.13 && <5
     , hcat
     , hspec
-    , quickcheck-instances
-    , quickcheck-text
-    , text
   default-language: GHC2021