[release-branch.go1.26] runtime/pprof: fix missing Profile docs
CL 688335 accidentally introduced a blank line between the Profile doc
comment and the type definition, causing the entire doc to get dropped.
Change-Id: I97b1c0e57d142d7caea6e543a0138ed6dcd1c3fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/743680
Auto-Submit: Austin Clements <austin@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>