fix(knime.py): fix __instal_exec() call

Author: breakthewall

retropath2_wrapper/knime.py

@@ -343,7 +343,7 @@ def install(self, logger: Logger = getLogger(__name__)) -> int:
 
         # If order to install, install exec and pkgs
         if self.kexec_install:
-            self.install_exec(logger=logger)
+            self.__install_exec(logger=logger)
             plugins_to_install = self.plugins_default
             plugins_to_remove = []
         else: