Fix incorect keybind

The windows-pc-colemark-jetbrains.json file had a keybind that described
changing the "End" key to instead perform as "Control+E", however its
implementation erroneously mapped to "k" and not "e".

Author: michaelbull

public/json/windows-pc-colemak-jetbrains.json

@@ -266,7 +266,7 @@
           },
           "to": [
             {
-              "key_code": "k",
+              "key_code": "e",
               "modifiers": [
                 "left_control"
               ]
@@ -2062,4 +2062,4 @@
       ]
     }
   ]
-}
+}