_content/doc/go1.24: add objdump updates

The objdump tool now supports dissassembly on riscv64, loong64,
and s390x.

Updates golang/go#15255, golang/go#36738.
For golang/go#68545.

Change-Id: I5e913eb27383f42777baac1cd8436a5c6eb629fd
Reviewed-on: https://go-review.googlesource.com/c/website/+/636519
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: cherrymui

_content/doc/go1.24.md

@@ -101,6 +101,12 @@ incorrect call sequence for `f(0)`. New in this release is a better detector for
 this error condition when the incompatible declarations appear in different
 files. See [#67699](/issue/67699).
 
+### Objdump
+
+<!-- go.dev/issue/15255, go.dev/issue/36738 -->
+The [objdump](/cmd/objdump) tool now supports dissassembly on 64-bit
+LoongArch (`GOARCH=loong64`), RISC-V (`GOARCH=riscv64`), and S390X (`GOARCH=s390x`).
+
 ### Vet
 
 <!-- go.dev/issue/44251 -->