Fix some easy Markdown linting issues

- Always use dashes for bullets
- Add some basic alt text for our readme OC sponsors

site/content/docs/5.0/utilities/display.md

@@ -16,20 +16,20 @@ Display utility classes that apply to all [breakpoints]({{< docsref "/layout/bre
 
 As such, the classes are named using the format:
 
-* `.d-{value}` for `xs`
-* `.d-{breakpoint}-{value}` for `sm`, `md`, `lg`, `xl`, and `xxl`.
+- `.d-{value}` for `xs`
+- `.d-{breakpoint}-{value}` for `sm`, `md`, `lg`, `xl`, and `xxl`.
 
 Where *value* is one of:
 
-* `none`
-* `inline`
-* `inline-block`
-* `block`
-* `table`
-* `table-cell`
-* `table-row`
-* `flex`
-* `inline-flex`
+- `none`
+- `inline`
+- `inline-block`
+- `block`
+- `table`
+- `table-cell`
+- `table-row`
+- `flex`
+- `inline-flex`
 
 The display values can be altered by changing the `$displays` variable and recompiling the SCSS.