Update README.md

Author: christianrickert

README.md

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 _blaupause_ is a minimalistic tool to copy a single directory.
 
-<img src="./assets/gui.png" alt="GUI with macOS" width="566">  
+<img src="./assets/gui.png" alt="GUI with macOS">  
 
 Command-line tools like _rsync_ (Linux & macOS) and _ROBOCOPY_ (Windows) provide powerful options for data transfer and duplication. However, achieving specific outcomes often requires frequent reference to documentation or diligent note-taking to recall the correct parameters.