fix links

Transformers/add-transformer.md

@@ -23,4 +23,4 @@ function register_new_transformers( $transformers_manager ) {
 add_action( 'activivitypub_transformer_register', 'register_new_transformers' );
 ```
 
-The transformer manager registers new transformers by accepting transformer instances. For more information about the transformer class, read about the [transformer class structure](./transformer-structure/).
+The transformer manager registers new transformers by accepting transformer instances. For more information about the transformer class, read about the [transformer class structure](./transformer-structure.md/).

Transformers/transformer-structure.md

@@ -1,10 +1,10 @@
-# Widget Structure
+# Transformer Structure
 
 To create a custom ActivityPub Transformer start by creating a class that extends the `\Activitypub\Transformer\Base` class and fill in all the required methods.
 
 Each transformer needs to have a few basic settings — a unique name that will identify the transformer, a label that will be used as the title when being displayed in the settings section, and a list of supported post types that the transformer can use as an input.
 
-## Widget Class
+## Transformer Class
 
 First, we need to create a class that extends the `\Activitypub\Transformer\Base` class: