cli: fix typo in error reporting

Return the proper error code for COMMAND_FAILED

Signed-off-by: Felix Fietkau <[email protected]>
(cherry picked from commit a10d10edd72e17a26f8b3c16cfc72984375844d2)

package/utils/cli/files/usr/share/ucode/cli/context-call.uc

@@ -98,7 +98,7 @@ export const callctx_error_proto = {
 		return this.error("NOT_FOUND", msg ?? "Not found", ...args);
 	},
 	command_failed: function(msg, ...args) {
-		return this.error("COMMAND_FAILEDu", msg ?? "Command failed", ...args);
+		return this.error("COMMAND_FAILED", msg ?? "Command failed", ...args);
 	},
 };