New Crowdin translations - ko (#26487)

Co-authored-by: Crowdin Bot <support+bot@crowdin.com>

docs/ko/dev_setup/dev_env_linux_ubuntu.md

@@ -4,21 +4,14 @@ The following instructions use a bash script to set up the PX4 development envir
 
 The environment includes:
 
-- [Gazebo Simulator](../sim_gazebo_gz/index.md) ("Harmonic")
-- [Build toolchain for Pixhawk (and other NuttX-based hardware)](../dev_setup/building_px4.md#nuttx-pixhawk-based-boards).
-
-On Ubuntu 22.04:
-
-- [Gazebo Classic Simulator](../sim_gazebo_classic/index.md) can be used instead of Gazebo.
-  Gazebo is nearing feature-parity with Gazebo-Classic on PX4, and will soon replace it for all use cases.
+- [Gazebo Simulator](../sim_gazebo_gz/index.md) (Gazebo Harmonic)
+- [Build toolchain for Pixhawk (and other NuttX-based hardware)](../dev_setup/building_px4.md#nuttx-pixhawk-based-boards) using the `gcc-arm-none-eabi` compiler from the Ubuntu package manager.
 
 The build toolchain for other flight controllers, simulators, and working with ROS are discussed in the [Other Targets](#other-targets) section below.
 
-:::details
-Can I use an older version of Ubuntu?
-PX4 supports the current and last Ubuntu LTS release where possible.
-Older releases are not supported (so you can't raise defects against them), but may still work.
-For example, Gazebo Classic setup is included in our standard build instructions for macOS, Ubuntu 18.04 and 20.04, and Windows on WSL2 for the same hosts.
+:::info
+PX4 targets the **current Ubuntu LTS** (24.04) for CI and release builds, with the **previous LTS** (22.04) also supported.
+Older Ubuntu versions are not supported and may not work.
 :::
 
 ## Simulation and NuttX (Pixhawk) Targets
@@ -52,9 +45,7 @@ The script is intended to be run on _clean_ Ubuntu LTS installations, and may no
    - 스크립트가 진행되는 동안 모든 프롬프트를 확인합니다.
    - You can use the `--no-nuttx` and `--no-sim-tools` options to omit the NuttX and/or simulation tools.
 
-3. If you need Gazebo Classic (Ubuntu 22.04 only) then you can manually remove Gazebo and install it by following the instructions in [Gazebo Classic > Installation](../sim_gazebo_classic/index.md#installation).
-
-4. 완료되면 컴퓨터를 재부팅합니다.
+3. 완료되면 컴퓨터를 재부팅합니다.
 
 :::details
 Additional notes
@@ -63,10 +54,11 @@ These notes are provided "for information only":
 - This setup is supported by the PX4 Dev Team.
   The instructions may also work on other Debian Linux based systems.
 
-- You can verify the NuttX installation by confirming the `gcc` version as shown:
+- You can verify the NuttX installation by confirming `gcc` is available.
+  The version depends on your Ubuntu release (e.g. GCC 13.2.1 on Ubuntu 24.04):
 
   ```sh
-  $arm-none-eabi-gcc --version
+  $ arm-none-eabi-gcc --version
 
   arm-none-eabi-gcc (15:13.2.rel1-2) 13.2.1 20231009
   Copyright (C) 2023 Free Software Foundation, Inc.