add Windows instructions to Installing and Getting Started pages

Dependencies

• [2] U676QFJF Add info about author name to “getting started”
• [3] 7AFWSA6V Conflict resolutions again
• [4] SCSV2FNS Reboot
• [5] RTRQAAX3 Update infos about AUR package
• [6] LLS53CR2 Add installation instructions for openSUSE Tumbleweed
• [7] GLUD3ZVF Generating the reference

Change contents

• replacement in src/installing.md at line 115
  [4.308909]→[4.308909:309070](∅→∅)
  − We do not provide Windows binaries at the moment, but we would like to.

  − If you want to help us do that, please [contact us](https://nest.pijul.com/pijul/pijul).
  [4.308909]
  + We do not provide official Windows binaries at the moment, but

  + [community-provided binaries are available](https://github.com/boringcactus/pijul-windows-builds/releases/latest).
• replacement in src/getting_started.md at line 40
  [2.276]→[2.276:339](∅→∅)
  − probably want is `$HOME/.config/pijul/config.toml` (Linux), or
  [2.276]

  [2.339]
  + probably want is `$HOME/.config/pijul/config.toml` (Linux), `%AppData%\pijul\config.toml` (Windows), or