Minor updates to adding-a-simple-bikehorn.md (#340)

src/en/ss14-by-example/adding-a-simple-bikehorn.md

@@ -145,7 +145,7 @@ Those helpers can be thought of as handling **client click -> server** and **ser
 In the Space Station 14 codebase, Components & EntitySystems alike (along with other classes) go inside folders directly under the `Content.Server`, `Content.Shared`, or `Content.Client` projects. There are folders for `Atmos`, `Botany`, `Research`, `Storage`, and a lot more. If a suitable folder doesn't exist, create one! Never put files directly into the top directory of the project.
 ```
 
-Under the `Content.Server` project, there's a folder called `Sound`. That seems like a good place to put our new component (and in fact, this is where the real EmitSoundOnUse is located). Let's call our version `PlaySoundOnUseComponent`. Note: if you just copy paste this code in, it may not work, as you'll need to import various classes. Your IDE can do this for you.
+Under the `Content.Server` project, there's a folder called `Sound`. This folder contains an aptly named `Components` folder. That seems like a good place to put our new component (and in fact, this is where the real `EmitSoundOnTriggerComponent` is located). Let's call our version `PlaySoundOnUseComponent`. Note: if you just copy paste this code in, it may not work, as you'll need to import various classes. Your IDE can do this for you.
 
 Now let's just make the most basic component possible:
 
@@ -166,6 +166,10 @@ In our prototype above, you might recall that we added `Sprite`, not `SpriteComp
 
 Now, let's go ahead and add PlaySoundOnUse to our prototype.
 
+```admonish info
+You must remove the `Component` part of the class suffix when using them in the prototype yaml. So `PlaySoundOnUseComponent` would be resolved as `PlaySoundOnUse` in the `components:` list in the yaml definition.
+```
+
 ```yaml
 - type: entity
   name: clown horn