docs: fix accent color on bold text in slide deck (#42)

Add .accent strong { color: inherit } so bold text inside accent
spans inherits the red color instead of being overridden by the
strong { color: #ffffff } rule. Rebuild HTML.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>

Signed-off-by: Pavel Anni <panni@redhat.com>

Author: pavelanni