updated image naming

Author: Ilaria Enache

images/learn/architecture/overview.webp images/learn/architecture/architecture-1.webp

@@ -10,9 +10,9 @@ need to add links
 
 ## Architecture
 
-Wormhole has several noteworthy components. Before we discuss each component in depth, let's discuss the names of the major pieces and how they fit together.
+Wormhole has several noteworthy components. Before discussing each component in depth, this page will provide an overview of how the major pieces fit together.
 
-![Wormhole architecture detailed diagram: source to target chain communication.](/images/learn/architecture/overview.webp)
+![Wormhole architecture detailed diagram: source to target chain communication.](/images/learn/architecture/architecture-1.webp)
 
 ## On-Chain Components
 

images/learn/introduction/simple-overview.webp images/learn/introduction/introduction-1.webp

@@ -12,7 +12,7 @@ also missing the list of blockchains
 
 Wormhole is a generic _message-passing protocol_ that enables communication between blockchains.
 
-![Message-passing process in the Wormhole protocol](/images/learn/introduction/simple-overview.webp)
+![Message-passing process in the Wormhole protocol](/images/learn/introduction/introduction-1.webp)
 
 !!! note
     The above is an oversimplified illustration of the protocol; details about the architecture and components are available on the [architecture page](/learn/architecture/){target=\_blank}.