Fix: Invalid link on explanations documentation. (#62487)

Co-authored-by: jorgefilipecosta <[email protected]>
Co-authored-by: t-hamano <[email protected]>

docs/explanations/README.md

@@ -8,5 +8,5 @@
 -   [Block Editor Performance](/docs/explanations/architecture/performance.md).
 -   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)
+-   [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/full-site-editing-templates.md)