011124: fix redirect for connection troubleshooting up to v4.8 (#508)

Author: Chris Cho

config/redirects

@@ -10,3 +10,4 @@ raw: ${prefix}/master -> ${base}/upcoming/
 [*-master]: ${prefix}/${version}/fundamentals/csfle/ -> ${base}/${version}/fundamentals/encrypt-fields/
 [*-master]: ${prefix}/${version}/fundamentals/crud/write-operations/change-a-document/ -> ${base}/${version}/fundamentals/crud/write-operations/modify/
 [*-v4.10]: ${prefix}/${version}/fundamentals/connection/socks/ -> ${base}/${version}/
+[*-v4.8]: ${prefix}/${version}/connection-troubleshooting/ -> ${base}/${version}/