Fix CI

Author: sobolevn

test-data/unit/cmdline.pyproject.test

@@ -151,10 +151,10 @@ y: int = 'y'  # E: Incompatible types in assignment (expression has type "str",
 z: int = 'z'
 [out]
 
-# Fails on windows for some reason
 [case testPyprojectPluginsTrailingComma-posix]
 # cmd: mypy .
 [file pyproject.toml]
+# This test fails on windows for some reason, skipping it there.
 \[tool.mypy]
 plugins = """
   <ROOT>/test-data/unit/plugins/function_sig_hook.py,