Update _index.md (#34735)

Co-authored-by: Olivia Shoup <116908616+OliviaShoup@users.noreply.github.com>

Author: roxanne-moslehi

content/en/internal_developer_portal/eng_reports/_index.md

@@ -1,5 +1,5 @@
 ---
-title: Engineering Report
+title: Engineering Reports
 further_reading:
 - link: "/service_level_objectives/"
   tag: "Documentation"