Blog RSS workaround via redirect (#5520)

Author: chalin

content/en/blog/_index.md

@@ -1,7 +1,11 @@
 ---
 title: Blog
 menu: { main: { weight: 50 } }
-redirects: [{ from: '', to: '2024/ 301!' }]
+redirects:
+  # Every January, update the year number in the paths below
+  - { from: '', to: '2024/ 301!' }
+  # Workaround to https://github.com/open-telemetry/opentelemetry.io/issues/4440:
+  - { from: 'index.xml', to: '2024/index.xml 301!' }
 outputs: [HTML, RSS]
 htmltest:
   IgnoreDirs: