Use best practice package name in test examples #10188

Job	Run time
Generate Code	1m 18s
Go Lint	1m 36s
Rego PR checks	1m 24s
YAML Lint	17s
Go Test (linux)	4m 23s
Go Build (linux amd64)	2m 19s
Go Test (darwin)	3m 47s
Check Generated	32s
Go Build (linux arm64)	2m 1s
Go compat build/test (ubuntu-22.04, 1.20)	2m 31s
Go Build (linux arm64GO_TAGS="-tags=opa_no_oci")	2m 5s
Go compat build/test (macos-14, 1.20)	3m 50s
Go Race Detector	6m 22s
Go Build (windows amd64)	2m 27s
WASM	10s
Go Build (darwin amd64)	1m 48s
Go Build (darwin arm64)	49s
docker image smoke test	40s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64, amd64)	11s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64_static, amd64, disabled)	9s
smoke-test-binaries (darwin, macos-13, opa_darwin_amd64, amd64)	27s
smoke-test-binaries (darwin, macos-14, opa_darwin_arm64_static, arm64, disabled)	15s
smoke-test-binaries (windows, windows-latest, opa_windows_amd64.exe, amd64)	43s
	40m 4s

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