The OS name and OS details are missing a space between them. Adding a space before the "(on the Windows Subsystem for Linux)" solves it. I have edited my local script to include this without trouble.
Now it read : wsl=" (Windows Subsystem for Linux)"
https://github.com/KittyKatt/screenFetch/blob/b56b0440021ecf646ad461cbf4fe24f4ec164bdb/screenfetch-dev#L1312
The OS name and OS details are missing a space between them. Adding a space before the "(on the Windows Subsystem for Linux)" solves it. I have edited my local script to include this without trouble. Now it read :
wsl=" (Windows Subsystem for Linux)"