Build instructions specify incorrect SoftConsole Python path

[TommyMurphyTM1234]

The SoftConsole Python path, since at least SoftConsole v2021.1, is:

$SC_INSTALL_DIR/python3

The build instructions specify incorrect paths.

• Linux: https://github.com/polarfire-soc/hart-software-services#building-on-linux

$ export PATH=$PATH:$SC_INSTALL_DIR/python/bin:$SC_INSTALL_DIR/riscv-unknown-elf-gcc/bin

• Windows: https://github.com/polarfire-soc/hart-software-services#building-on-windows

C:\> path %SystemRoot%;%SC_INSTALL_DIR%\build_tools\bin;%SC_INSTALL_DIR%\python3;%SC_INSTALL_DIR%\python;%SC_INSTALL_DIR%\riscv-unknown-elf-gcc\bin

Also - %SystemRoot% in the Windows should probably be %PATH%?
And/or %PATH% should be put at the end of the modified PATH?