fix: add white stroke to SVG logo text for dark mode visibility (#1319)

[Yasir-Rafique]

This PR fixes #1319.

• Added a white stroke to the SVG logo’s bottom text for visibility on dark backgrounds.
• Change made directly to media/logo.svg since the .ai source was not available.

Before:

• Bottom text blends into dark backgrounds and is hard to read.

After:

• Bottom text is clearly visible in both light and dark mode.

(Tested visually in VS Code and browser dark mode.)

[sindresorhus]

Stroke looks really bad. The right solution is to make it white when in dark mode. It's possible to do that in pure SVG.

[Yasir-Rafique]

This PR fixes #1319.

• The SVG banner’s bottom text is now set to a color (#888899) that is readable on both light and dark backgrounds, ensuring visibility in all viewing conditions.
• SVG media queries (for dark mode) only work when the SVG is embedded inline, not as an <img src="...">. Since the README uses an <img>, a static color is the only compatible solution.
• If perfect brand color is desired for both themes, separate dark and light SVGs can be created and swapped with site-level CSS, but this is not possible on GitHub READMEs or most OSS banners.

Let me know if this solutions works better!!

Screenshots for both modes are attached below for reference.

(Dark Mode)

(Light mode)

[sindresorhus]

It is possible to do dynamic color switching inside SVG in an img. I'm doing it in some places. But this solution works well too. Thanks 👍