Apply suggestions from code review

Co-authored-by: Carlos Cordoba <ccordoba12@gmail.com>

Author: impact27

spyder/config/main.py

@@ -513,8 +513,8 @@
               'ipython_console/clear line': "Shift+Escape",
               'ipython_console/enter array inline': "Ctrl+Alt+M",
               'ipython_console/enter array table': "Ctrl+M",
-              'ipython_console/go to next console': "Ctrl+Alt+Right",
-              'ipython_console/go to previous console': "Ctrl+Alt+Left",
+              'ipython_console/go to next console': "Shift+Right",
+              'ipython_console/go to previous console': "Shift+Left",
               # ---- In widgets/arraybuider.py ----
               'array_builder/enter array inline': "Ctrl+Alt+M",
               'array_builder/enter array table': "Ctrl+M",

spyder/plugins/ipythonconsole/widgets/main_widget.py

@@ -426,6 +426,7 @@ def setup(self):
             triggered=lambda: self.tabs.tab_navigate(-1),
             register_shortcut=True
         )
+
         # --- For the client
         self.env_action = self.create_action(
             IPythonConsoleWidgetActions.ShowEnvironmentVariables,