Fix function call

Signed-off-by: Conor MacBride <[email protected]>

Author: ConorMacBride

pytest_mpl/plugin.py

@@ -846,7 +846,7 @@ def pytest_unconfigure(self, config):
                 summary = self.generate_summary_json()
                 print(f"A JSON report can be found at: {summary}")
             if 'html' in self.generate_summary:
-                summary = self.generate_summary_html(dir_list)
+                summary = self.generate_summary_html()
                 print(f"A summary of the failed tests can be found at: {summary}")