Redirect overview to new content

Author: mehabhalodiya

static/_redirects

@@ -169,6 +169,7 @@
 /docs/contribute/write-new-topic/        /docs/home/contribute/write-new-topic/ 301
 /docs/contribute/start/        /docs/contribute/ 301
 /docs/contribute/intermediate/        /docs/contribute/ 301
+/docs/contribute/new-content/overview/        /docs/contribute/new-content/ 301
 
 /docs/deprecate/     /docs/reference/using-api/deprecation-policy/ 301
 /docs/deprecated/     /docs/reference/using-api/deprecation-policy/ 301