Use Accel instead of Ctrl where appropriate.

packages/console-extension/schema/tracker.json

@@ -14,7 +14,7 @@
     },
     {
       "command": "console:linebreak",
-      "keys": ["Ctrl Enter"],
+      "keys": ["Accel Enter"],
       "selector": ".jp-CodeConsole[data-jp-interaction-mode='terminal'] .jp-CodeConsole-promptCell"
     },
     {

packages/mainmenu-extension/schema/plugin.json

@@ -24,17 +24,17 @@
     },
     {
       "command": "editmenu:redo",
-      "keys": ["Ctrl Shift Z"],
+      "keys": ["Accel Shift Z"],
       "selector": "[data-jp-undoer]"
     },
     {
       "command": "editmenu:undo",
-      "keys": ["Ctrl Z"],
+      "keys": ["Accel Z"],
       "selector": "[data-jp-undoer]"
     },
     {
       "command": "filemenu:close-and-cleanup",
-      "keys": ["Ctrl Shift Q"],
+      "keys": ["Accel Shift Q"],
       "selector": ".jp-Activity"
     },
     {