fix typo

Co-authored-by: James Clarke <139879523+jclarkeSTFC@users.noreply.github.com>

Author: jhaigh0

qt/python/mantidqtinterfaces/test/Muon/elemental_analysis_2/EA_loading_tab/elemental_analysis_loadrun_presenter_single_run_test.py

@@ -31,7 +31,7 @@ def setUp(self):
 
         setup_context_for_ea_tests(self)
 
-        self.view = mock.create_autospec(LoadRunWidgetView, instace=True)
+        self.view = mock.create_autospec(LoadRunWidgetView, instance=True)
         self.model = mock.Mock(LoadRunWidgetModel, autospec=True)
         self.presenter = LoadRunWidgetPresenterEA(self.view, self.model)