[Bug][Accessibility] Missing `alt` attribute for Kmesh logo in About section

## Task Description

The Kmesh logo image in the About section (`src/components/About/index.js`) is missing an `alt` attribute.

This is an accessibility issue because screen readers cannot provide a meaningful description of the image. It is also a minor SEO improvement.

## Current Code

```jsx

```

## Expected Behavior

The image should include a descriptive `alt` attribute so that assistive technologies can correctly identify it.

## Proposed Solution

Update the image element to include an appropriate `alt` attribute and use the self-closing JSX syntax.

Example:

```jsx

```

This improves accessibility while following standard JSX conventions.