add language hints to code blocks

src/content/docs/processors/midi/message/decode.md

@@ -9,6 +9,6 @@ This processor will decode incoming bytes into a MIDI message. This processor wi
 - **type**: `midi.message.decode`
 
 ### Example
-```
+```yaml
 - type: midi.message.decode
 ```

src/content/docs/processors/midi/message/encode.md

@@ -9,6 +9,6 @@ This processor will encode a MIDI message into an array of bytes. This processor
 - **type**: `midi.message.encode`
 
 ### Example
-```
+```yaml
 - type: midi.message.encode
 ```

src/content/docs/processors/midi/message/unpack.md

@@ -9,6 +9,6 @@ This processor will unpack a MIDI message into its individual components. This p
 - **type**: `midi.message.unpack`
 
 ### Example
-```
+```yaml
 - type: midi.message.unpack
 ```