Update README.md

Author: adionnet

README.md

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-Generaimages
-
-Landscapes and more: generative images of a hobbyist
-
+<h3>Generaimages</h3>
+<h4>Landscapes and more: generative images of a hobbyist</h4>
+<hr>
 A supplementary page of https://generaimages.threadless.com/about and https://ko-fi.com/generaimages to download free images.
 
 The images are free to download. Attribution is optional.
@@ -13,3 +12,4 @@ For personal use: modification of the image is not required.
 For commercial use: please modify the image (e.g., as a subject's background, in a mockup, with overlay text, by making it black and white, or through other alterations.)
 
 https://adionnet.github.io/generaimages (Can also be opened through: https://generaimages.pages.dev)
+<hr>