doc: Documentation issue in 'Readme.rst' - broken hyperlink from kconfiglib to zephyrproject

[ngenetzky-appareo]

Describe the bug

Broke hyperlink from https://pypi.org/project/kconfiglib/ to zephyrproject.

Here is the text with the hyperlink: https://github.com/ulfalizer/Kconfiglib/blame/061e71f7d78cb057762d88de088055361863deff/README.rst#L72

See this page for some Kconfig tips and best practices.

Environment

• Page: README.rst
• Version: master
• SHA-1: 061e71f7d78cb057762d88de088055361863deff

Cross-Posted:

• https://github.com/zephyrproject-rtos/zephyr/issues/66701
• https://github.com/ulfalizer/Kconfiglib/issues/135