Attach a speaker peripheral inside its docs

This required a version bump to cct-javadoc to allow using attributes
inside <pre> blocks.

gradle/libs.versions.toml

@@ -42,7 +42,7 @@ jqwik = "1.7.0"
 junit = "5.9.1"
 
 # Build tools
-cctJavadoc = "1.5.3"
+cctJavadoc = "1.6.0"
 checkstyle = "10.3.4"
 curseForgeGradle = "1.0.11"
 errorProne-core = "2.14.0"

projects/common/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java

@@ -242,7 +242,7 @@ public final boolean playNote(ILuaContext context, String instrumentA, Optional<
      * @throws LuaException If the sound name was invalid.
      * @cc.usage Play a creeper hiss with the speaker.
      *
-     * <pre>{@code
+     * <pre data-peripheral="speaker">{@code
      * local speaker = peripheral.find("speaker")
      * speaker.playSound("entity.creeper.primed")
      * }</pre>
@@ -294,7 +294,7 @@ public final boolean playSound(ILuaContext context, String name, Optional<Double
      * @cc.since 1.100
      * @cc.usage Read an audio file, decode it using @{cc.audio.dfpwm}, and play it using the speaker.
      *
-     * <pre>{@code
+     * <pre data-peripheral="speaker">{@code
      * local dfpwm = require("cc.audio.dfpwm")
      * local speaker = peripheral.find("speaker")
      *