fix images; fix closing brace on cs ref (#1992)

docs/guides/int_basics/message-components/buttons-in-depth.md

@@ -28,7 +28,7 @@ This is the property sent to you by discord when a button is clicked. It is not
 
 Styling your buttons are important for indicating different actions:
 
-![](Images/image3.png)
+![](images/image3.png)
 
 You can do this by using the `ButtonStyle` which has all the styles defined.
 

docs/guides/int_basics/message-components/responding-to-buttons.md

@@ -34,4 +34,4 @@ public async Task MyButtonHandler(SocketMessageComponent component)
 
 Running it and clicking the button:
 
-![](Images/image2.png)
+![](images/image2.png)

docs/guides/int_framework/post-execution.md

@@ -48,7 +48,7 @@ Interaction Result come in a handful of different flavours:
 Every time a command gets executed, Interaction Service raises a `CommandExecuted` event.
 These events can be used to create a post-execution pipeline.
 
-[!code-csharp[Error Review](samples/postexecution/error_review.cs)
+[!code-csharp[Error Review](samples/postexecution/error_review.cs)]
 
 ## Log Event