docs: fix markdown rendering with @rawHTML directive

Phase 1 complete: Fix rawHTML function in template
- Change { doc.Content } to @rawHTML(doc.Content)
- Ensures markdown converts to HTML properly
- Fixes headings, lists, code blocks formatting

templates/docs.templ

@@ -238,7 +238,7 @@ templ DocsLayout(nav Navigation, doc Document, user User) {
 				
 				<!-- Content -->
 				<div>
-					{ doc.Content }
+					@rawHTML(doc.Content)
 				</div>
 			</div>