fix: escape backticks in resources.ts template literal

Author: Copilot

src/resources.ts

@@ -59,9 +59,9 @@ Performs web searches using the configured SearXNG instance.
 - \`num_results\` (optional): Maximum result count from 1 to 20
 - \`categories\` (optional): Comma-separated SearXNG categories such as "news" or "it,science"
 - \`engines\` (optional): Comma-separated SearXNG engine names such as "google,bing,ddg"
-- `response_format` (optional): "text" for formatted output or "json" for raw SearXNG-shaped JSON (may include a `warnings` array for non-fatal issues)
+- \`response_format\` (optional): "text" for formatted output or "json" for raw SearXNG-shaped JSON (may include a \`warnings\` array for non-fatal issues)
 
-Text output can include metadata sections for direct answers, spelling corrections, suggestions, and infoboxes before the result list. JSON output preserves the SearXNG response shape with filtered and sliced `results`, and may include a `warnings` array for non-fatal issues.
+Text output can include metadata sections for direct answers, spelling corrections, suggestions, and infoboxes before the result list. JSON output preserves the SearXNG response shape with filtered and sliced \`results\`, and may include a \`warnings\` array for non-fatal issues.
 
 ### 2. searxng_search_suggestions
 Returns autocomplete suggestions from the configured SearXNG instance.