fix: change chord second key from A to C (Cmd+K C)

package.json

@@ -75,22 +75,22 @@
     },
     "keybindings": [
       {
-        "key": "ctrlcmd+k a",
+        "key": "ctrlcmd+k c",
         "command": "copy-ai-ctx.copySelection",
         "when": "editorHasSelection"
       },
       {
-        "key": "ctrlcmd+k a",
+        "key": "ctrlcmd+k c",
         "command": "copy-ai-ctx.copyFile",
         "when": "!editorHasSelection && editorFocus"
       },
       {
-        "key": "ctrlcmd+k a",
+        "key": "ctrlcmd+k c",
         "command": "copy-ai-ctx.copySelectedFiles",
         "when": "explorerViewletVisible && !listMultiSelection"
       },
       {
-        "key": "ctrlcmd+k a",
+        "key": "ctrlcmd+k c",
         "command": "copy-ai-ctx.copyMultiFiles",
         "when": "explorerViewletVisible && listMultiSelection"
       }