_content/doc/go1.27: reword PPC64 release notes

Change the subsection title to PowerPC, as it is more specific to
PPC64 than to Linux in general.

Suggesting users "should" set CGO_ENABLED=0 is too strong. The
default should just work in most cases. Mention CGO_ENABLED=0 only
when a static, internally linked binary is needed. And the default
build mode and link mode just follow. Users don't need to
explicitly set them.

Change-Id: I242e308b10381d7bc47128e7c7ff01cf64a72128
Reviewed-on: https://go-review.googlesource.com/c/website/+/788200
Reviewed-by: Paul Murphy <paumurph@redhat.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

_content/doc/go1.27.md

diff --git a/_content/doc/go1.27.md b/_content/doc/go1.27.md
index c3755cb..a3d1d2e 100644
--- a/_content/doc/go1.27.md
+++ b/_content/doc/go1.27.md
@@ -492,24 +492,26 @@
 Go 1.27 requires macOS 13 Ventura or later;
 support for previous versions has been discontinued.
 
-### Linux {#linux}
+### PowerPC {#ppc64}
 
 <!-- go.dev/issue/76244 -->
 
-On ppc64, the ABI has been migrated to ELFv2. This change
-has no effect for those building and running pure Go
-binaries.
+On the big-endian 64-bit PowerPC port on Linux (`GOOS=linux` `GOARCH=ppc64`),
+the Go toolchain now generates binaries that use the ELFv2
+system ABI.
+ELFv2 support requires Linux kernel 3.13 or later.
+RHEL7 backported this support to its 3.10 kernel.
 
-On ppc64, for maximum backward compatibility, existing users
-should explicitly disable cgo, external linking, and use the
-default build mode. That is, set `CGO_ENABLED=0` in the
-environment, and pass the option `-ldflags="-linkmode=internal"`
-to go build and similar. Linux ELFv2 support was added in
-3.13, RHEL7 backported this support to its 3.10 kernel.
+Cgo, position-independent executables (PIE), and external linking
+are now supported.
+Using these features requires an ELFv2 compatible runtime
+(libc and all linked and loaded libraries).
 
-On ppc64, external linking, cgo, and PIE binaries are now
-supported. Using these features requires an ELFv2 compatible
-runtime (libc, kernel, and all linked and loaded libraries).
+For programs that do not use cgo, the Go toolchain still
+generates static binaries with internal linking by default.
+For programs that have cgo options, if a static, pure-Go binary
+is needed, one can set the environment variable `CGO_ENABLED=0`
+when running `go build`.
 
 ## TODO