Check spelling and grammar / standardization of videos, images and screenshots

[Nirus2000]

Referenz: #77

Bitte vor pull request.... Rechtschreibprüfung durchlaufen lassen sowie Grammatikprüfung absolvieren.

Es sind soooooooo viele Fehler und falsche Formulierungen drin.

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@hug-sch Please write the Contributing Rules so that a uniform standard is developed.

please before pull request.... run through spell check and grammar check.

There are soooooooo many mistakes and wrong formulations in it.

Video setting: (First thoughts)

• At least Full HD resolution - 1080p (1920x1080)
  • I don't know... maybe 1024x768? I dont know...
• Subtitles <->Text possibly in German/English?
  • No sound
• Defined image section of the video content
  • If possible exclusively in the PP software
  • Use in example file → Kommer.xml which is in PP
  • No private PP file with data
  • No private desktop background (solid color)
  • Portfolio performance in "light" mode (no dark)
  • z. e.g. in Windows or Mac → Standard design → "Light" mode (no dark)
  • etc.

Picture/Screenshot setting: (First thoughts)

• Use in example file → Kommer.xml which is in PP
• If possible exclusively in the PP software
• At least Full HD resolution - 1080p (1920x1080)
• No private desktop background (solid color)
• No private PP file with data
• Portfolio performance in "light" mode (no dark)
• e.g. in Windows or Mac → Standard design → "Light" mode (no dark)
• etc.

Originally posted by @Nirus2000 in https://github.com/portfolio-performance/portfolio-help/issues/77#issuecomment-2099938314

[hug-sch]

Updated contributing.md