fix: shorten doc page titles for search and improve bidi description

Stop concatenating full description into title tag — was producing
170+ char titles that Google truncated. Use consistent short format:
"Title (badge) — OOXML Reference | ooxml.dev". Rewrite bidi page
description to communicate value instead of listing subtopics.

Author: caio-pizzol

apps/web/src/data/docs.ts

@@ -455,7 +455,7 @@ Each border element has:
 	"bidirectional-text": {
 		title: "Bidirectional Text (RTL)",
 		description:
-			"Right-to-left paragraph layout, run-level text direction, and how bidi interacts with alignment, indentation, and tab stops.",
+			"How RTL layout actually works in OOXML — paragraph direction, run-level bidi, and where alignment and tab stops break.",
 		badge: "w:bidi",
 		content: [
 			{

apps/web/src/data/seo.ts

@@ -43,7 +43,7 @@ export function getSeoMeta(path: string): SeoMeta {
 	if (page) {
 		const badge = page.badge ? ` (${page.badge})` : "";
 		return {
-			title: `${page.title}${badge} — ${page.description || "OOXML Reference"} | ooxml.dev`,
+			title: `${page.title}${badge} — OOXML Reference | ooxml.dev`,
 			description:
 				page.description || `${page.title} — interactive OOXML reference with live previews.`,
 			type: "article",