cmd/compile: replace angle brackets with square
Caused Markdown rendering error on https://go.dev/src/cmd/compile/README in macOS (15.6.1) Safari (18.6).
Change-Id: Id71436d9a7bc7e461e522500d66df5dda7cd9f7f
GitHub-Last-Rev:
4e4447e163ac65e6c394807ec4874bc5ca26bb32
GitHub-Pull-Request: golang/go#75549
Reviewed-on: https://go-review.googlesource.com/c/go/+/704716
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@google.com>