Rename Libraries to libraries

[ZachaRuba]

Subject of the issue

"Libraries" folder not recognized as the "libraries" folder when setting arduino sketchbook location OpenLog repo.

Currently you need to copy the folders in "Libraries" into your current arduino sketchbook "libraries" to use the them when trying to build the sketch (and you may already have a library of a different version that conflicts). It's significantly more convenient to uncapitalize the "Libraries" and change your sketchbook location in arduino to be the OpenLog repo - this allows the libraries folder to be instantly recognized and easier to get started. Like a seperate "environment" of sorts.

Your workbench

Arduino 1.8.19
Ubuntu 22.04.3 LTS - 64bit

Steps to reproduce

setting arduino sketchbook location OpenLog repo.
https://forum.arduino.cc/t/libraries-change-default-location/954752

Expected behavior

Should build the sketch using the libraries provided in the repo.

Actual behavior

when building, sdfat.h and serialport.h are missing. Changing Libraries to libraries fixes the issue and builds as expected.