Fix incorrect usermod name: LD2410 -> LD2410_v2

[quake1508]

Compiling the WLED firmware with the LD2410 usermod fails because there is no module with that name in the usermods directory.

The correct usermod directory is LD2410_v2, so the usermod name must match that exactly in the build configuration.

This fix updates the example or documentation (depending on what you're editing) to reflect the correct usermod name.

Tested with: platformio_override.ini using:

custom_usermods = ${env:esp32dev.custom_usermods} LD2410_v2


<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

* **Documentation**
  * Updated the usermod documentation to correct the custom usermod name in the configuration example.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

[coderabbitai]

Walkthrough

The documentation for enabling the LD2410 usermod was updated to correct the custom usermod name in the example configuration, changing it from LD2140 to LD2140_v2. No other content or instructions were modified.

Changes

File(s)	Change Summary
usermods/LD2410_v2/readme.md	Updated configuration example to use correct usermod name.

---

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📥 Commits

Reviewing files that changed from the base of the PR and between 2c1cf87 and 7eb944b.

📒 Files selected for processing (1)

• usermods/LD2410_v2/readme.md (1 hunks)

🧰 Additional context used

🧠 Learnings (2)

📓 Common learnings

Learnt from: KrX3D
PR: wled/WLED#4237
File: usermods/INA219_v2/INA219_v2.cpp:265-276
Timestamp: 2025-04-18T22:27:58.634Z
Learning: When implementing MQTT message handling in WLED usermods, use `strstr(topic, "/specific/path")` instead of `strcmp_P(topic, PSTR("/specific/path"))` to properly match topics that include the device prefix. The full MQTT topic typically follows the pattern `<mqttDeviceTopic>/specific/path`.

Learnt from: willmmiles
PR: wled/WLED#4623
File: usermods/word-clock-matrix/word-clock-matrix.cpp:332-332
Timestamp: 2025-03-29T01:22:54.617Z
Learning: In the WLED project, hardcoded usermod IDs (like 500 in the WordClockMatrix's getId() method) are intentionally used as part of a strategy to avoid modifying core code. There are plans to remove numeric usermod IDs entirely in the future.

Learnt from: blazoncek
PR: wled/WLED#4482
File: wled00/udp.cpp:147-149
Timestamp: 2025-02-19T12:43:34.199Z
Learning: ESP8266 and ESP32 platforms have different maximum segment name lengths in WLED, which can cause truncation when syncing segment names between devices. This platform difference affects the user experience when using the segment name sync feature.

Learnt from: KrX3D
PR: wled/WLED#4585
File: usermods/seven_segment_display_reloaded_v2/seven_segment_display_reloaded_v2.h:121-136
Timestamp: 2025-04-27T09:37:28.415Z
Learning: Using PROGMEM for the seven-segment font array (umSSDRNumbers) in the WLED SSDR usermod causes compilation problems, so it should be left as a regular array.

usermods/LD2410_v2/readme.md (1)

Learnt from: willmmiles
PR: wled/WLED#4623
File: usermods/word-clock-matrix/word-clock-matrix.cpp:332-332
Timestamp: 2025-03-29T01:22:54.617Z
Learning: In the WLED project, hardcoded usermod IDs (like 500 in the WordClockMatrix's getId() method) are intentionally used as part of a strategy to avoid modifying core code. There are plans to remove numeric usermod IDs entirely in the future.

---

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[DedeHai]

thanks!

[KotBayun69]

It was driving me mad and I was thinking I am stupid. Blindly copy-pasted the string from the readme and get an error ' The usermod couldn't be found'. What really was is the name in the readme is incorrect. Please change LD2140_v2 to LD2410_v2

[blazoncek]

@KotBayun69 you can provide a patch.