Ready for PCB production

Minor edits for the next production run.

Full Changelog: 2021/03...PCB_20221018

Improved version release

The changes are related to improvement in TFRPM01C

• Increased current flowing through IR illuminating LED
• Introduced the new pull-up resistor on the TFPROBE side enhancing the signal integrity

The changes ensure that TFRPM01C and TFPROBE01A are working together on a wide range of materials.

Market availability

2021/02

Update README.md