log: Update package documentation (#5942)

Follows
open-telemetry/opentelemetry-specification#4259

Fixes link which is no longer valid:
https://github.com/open-telemetry/opentelemetry-go/actions/runs/11662295388/job/32468365322

log/DESIGN.md

@@ -26,14 +26,12 @@ This proposed design aims to:
 
 The API is published as a single `go.opentelemetry.io/otel/log` Go module.
 
-The module name is compliant with
-[Artifact Naming](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/bridge-api.md#artifact-naming)
-and the package structure is the same as for Trace API and Metrics API.
-
+The package structure is similar to Trace API and Metrics API.
 The Go module consists of the following packages:
 
 - `go.opentelemetry.io/otel/log`
 - `go.opentelemetry.io/otel/log/embedded`
+- `go.opentelemetry.io/otel/log/logtest`
 - `go.opentelemetry.io/otel/log/noop`
 
 Rejected alternative:

log/doc.go

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 /*
-Package log provides the OpenTelemetry Logs Bridge API.
+Package log provides the OpenTelemetry Logs API.
 
 This package is intended to be used by bridges between existing logging
 libraries and OpenTelemetry. Users should not directly use this package as a

log/logger.go

@@ -28,6 +28,9 @@ type Logger interface {
 	//
 	// Implementations of this method need to be safe for a user to call
 	// concurrently.
+	//
+	// Notice: Emit is intended to be used by log bridges.
+	// Is should not be used for writing instrumentation.
 	Emit(ctx context.Context, record Record)
 
 	// Enabled returns whether the Logger emits for the given context and
@@ -50,6 +53,9 @@ type Logger interface {
 	//
 	// Implementations of this method need to be safe for a user to call
 	// concurrently.
+	//
+	// Notice: Enabled is intended to be used by log bridges.
+	// Is should not be used for writing instrumentation.
 	Enabled(ctx context.Context, param EnabledParameters) bool
 }