Problems on the Lumo Badges documentation

[rolandoisidoro]

The Lumo Badges documentation has a few problems that need to be revised:

• The @CssImport(include = "lumo-badge") instruction, mentioned for server-side views (Java), is missing the mandatory value parameter on the annotation, which results in the following error 'value' missing though required;
• The icons are missing from the examples on Icon section. Tried in different browsers: Chrome, Edge (Chromium based) and Firefox, and they all render that section as shown in the screenshot bellow.

[mvysny]

Please see #1354 for the workaround for 'value' missing though required