Fix: Rename, changed URL Link (#30483)

docs/explanations/architecture/README.md

@@ -10,4 +10,4 @@ Let’s look at the big picture and the architectural and UX principles of the b
 - What are the decision decisions behind the Data Module?
 - [Why is Puppeteer the tool of choice for end-to-end tests?](/docs/explanations/architecture/automated-testing.md)
 - [What's the difference between the different editor packages? What's the purpose of each package?](/docs/explanations/architecture/modularity.md#whats-the-difference-between-the-different-editor-packages-whats-the-purpose-of-each-package)
-- [Template and template parts flows](/docs/explanations/architecture/fse-templates.md)
+- [Template and template parts flows](/docs/explanations/architecture/full-site-editing-templates.md)