Misplaced files in pgf-PeriodicTable (v2.0.0)

[Karl Berry]

    - the files <<pgfPT.input.library.tex>> and <<pgfPTlibrary.colorschemes.tex>>
    are in
    \texlive\2023\texmf-dist\doc\latex\pgf-periodictable
    and must be in
    \texlive\2023\texmf-dist\tex\latex\pgf-periodictable

Thanks Hugo. Fixed for tonight's update. --best, karl.