review updates

Author: korovitskyi

app/code/Magento/EavGraphQl/README.md

@@ -1,6 +1,6 @@
 # Magento_EavGraphQl module
 
-Magento_EavGraphQl module extends Magento_GraphQl and Magento_Eav modules to provides type and resolver information for  GraphQL API.
+Magento_EavGraphQl module extends Magento_GraphQl and Magento_Eav modules to provides type and resolver information for GraphQL API.
 
 ## Installation details
 

app/code/Magento/Elasticsearch/README.md

@@ -1,6 +1,6 @@
 #Magento_Elasticsearch module
 
-Magento_Elasticsearch module allows using Elastic search engine for the product searching capabilities.
+Magento_Elasticsearch module allows using the Elasticsearch engine for the product searching capabilities.
 
 The module implements Magento_Search library interfaces.
 
@@ -12,7 +12,7 @@ For information about a module installation in Magento 2, see [Enable or disable
 
 ## Structure
 
-`Elasticsearch5/` - the directory that contains solutions for  providing ElasticSearch 5.x version.
+`Elasticsearch5/` - the directory that contains solutions for providing ElasticSearch 5.x version.
 
 `SearchAdapter/` - the directory that contains solutions for adapting ElasticSearch query searching.
 

app/code/Magento/EncryptionKey/README.md

@@ -2,6 +2,18 @@
 
 The Magento_EncryptionKey module provides an advanced encryption model to protect passwords and other sensitive data.
 
+## Extensibility
+
+Extension developers can interact with the Magento_EncryptionKey module. For more information about the Magento extension mechanism, see [Magento plugins](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/plugins.html).
+
+[The Magento dependency injection mechanism](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/depend-inj.html) enables you to override the functionality of the Magento_EncryptionKey module.
+
+### Layouts
+
+This module introduces the following layouts and layout handles in the `view/adminhtml/layout` directory:
+
+- `adminhtml_crypt_key_index`
+
 ## Additional information
 
 For information about significant changes in patch releases, see [2.4.x Release information](https://devdocs.magento.com/guides/v2.4/release-notes/bk-release-notes.html).