Hilton Page Reference Code

When an image is the only content of a link, it should specify alternative text, 
via an `alt` attribute. The alternative text should describe the purpose of the link.

Without this, some users will be unable to determine what a link does, for example anyone 
using a screen reader.

To fix this, simply add an `alt` attribute to the image inside the link, e.g.:

```html
<a href="/apple">
    <img src="apple.png" alt="A red apple">
</a>
```

Title / URL	Issues
Hilton Page Reference Codewww.hilton.com/en/brands/embassy-suites/	1
Hilton Page Reference Codewww.hilton.com/en/brands/hilton-garden-inn/	1
Hilton Page Reference Codewww.hilton.com/en/brands/hilton-hotels/	1
Hilton Page Reference Codewww.hilton.com/en/brands/curio-collection/	1
Hilton Page Reference Codewww.hilton.com/en/brands/tru-by-hilton/	1
Hilton Page Reference Codewww.hilton.com/en/brands/homewood-suites/	1
Hilton Page Reference Codewww.hilton.com/en/brands/doubletree-by-hilton/	1
Hilton Page Reference Codewww.hilton.com/en/brands/waldorf-astoria/	1
Hilton Page Reference Codewww.hilton.com/en//	1
Hilton Page Reference Codewww.hilton.com/en/locations/	1

Specify alternative text for images inside links

Hilton Worldwide Holdings Inc

Where this issue has occurred