_content/doc/pgo: mention PGO tools wiki page

Change-Id: Id1ce731a377173b15bc7398a1f4b6d7cfb06e2c0
Reviewed-on: https://go-review.googlesource.com/c/website/+/523495
Reviewed-by: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>

_content/doc/pgo.md

@@ -262,3 +262,5 @@ Profiles from alternative source may be used with Go PGO if converted to the [pp
   **Note that many existing pprof converters omit this field.**
 
 _Note: Before Go 1.21, DWARF metadata omits function start lines (`DW_AT_decl_line`), which may make it difficult for tools to determine the start line._
+
+See the [PGO Tools](https://github.com/golang/go/wiki/PGO-Tools) page on the Go Wiki for additional information about PGO compatibility of specific third-party tools.