Add icons at the top of all pages in the solutions index

### Overview
We need to add icons to the solution index pages that match the icons that are showing up in the WAVE evaluation tool so that when developers find a problem in their WAVE accessibility review they will see the same icon when the come to the page in the solution index

#### Details
See resource 1.0.2 for example of what each page should look like once icon is added

### Action Items

- [x] Go to Resource 1.0.1.
- [x] Open the page where you want to add the icon.
- [x] Edit the page.
- [x] In the **WAVE Guidance** section, copy the URL under `??? Info "Click to see WAVE Tool Reference"` at the end of **Check for updated guidance at:** and open it in your browser.
- [x] Copy the icon from the top of that page that opens up.
- [x] Go back to the page in the repo and paste the icon after the single `#` in the page title.
- [x] Move the title back onto the same line, leaving one space between the icon and the title.
- [x] Preview the page to verify the formatting.
- [x] Save and commit.

### Resources/Instructions
- 1.0.1 https://github.com/hackforla/accessibility/tree/main/docs/known-issues-and-solutions/solutions-index
- 1.0.2 https://github.com/hackforla/accessibility/blob/main/docs/known-issues-and-solutions/solutions-index/error-empty-button.md
- 1.0.3 Spreadsheet: [Accessibility: WAVE: Known Issues and Solutions DRAFTS](https://docs.google.com/spreadsheets/d/14cXbfsc2McDpKxmGyXbLPkCgj1aeN7NmlxzeeJqlcsU)