Clarify RTL support in WordPress.org asset documentation (v1.6.27)

assets/icon/README.md

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+# WordPress.org Icon Requirements
+
+For WordPress.org plugin submission, you need to:
+
+1. Convert the SVG icon to PNG format
+2. Create a 256x256 and 128x128 pixel version
+3. Name them `icon-256x256.png` and `icon-128x128.png`
+4. Place them in the `/assets/` directory of your WordPress.org SVN repository
+
+## How to Convert
+
+You can use tools like:
+- Inkscape (free, open-source)
+- Adobe Illustrator
+- Adobe Photoshop
+- Affinity Designer
+- Affinity Photo
+- GIMP
+- Pixelmator
+- Online converters like https://svgtopng.com/
+
+## Command Line Conversion (if you have ImageMagick installed)
+
+```bash
+# For 256x256 icon
+convert -background none -size 256x256 assets/icon/fix-plugin-does-not-exist-notices-icon.svg assets/icon/icon-256x256.png
+
+# For 128x128 icon
+convert -background none -size 128x128 assets/icon/fix-plugin-does-not-exist-notices-icon.svg assets/icon/icon-128x128.png
+```
+
+After creating the PNG file, it should be uploaded to the WordPress.org SVN repository in the assets directory.