docs/HowToDebug.md: Update debug link for TRAP
There are several debug methods.
-- [How to use RAMDUMP](../tools/ramdump/HowToUseRamdump.md)
+- [How to use TRAP tool](../tools/trap/HowToUseTrap.md)
- [How to use Shell Commands](../apps/system/utils/README.md)
- [How to use Logging System](HowToUseLoggingSystem.md)
- [How to debug a crash](HowToDebugACrash.md)
