Fix links to correct Magento 2 filesystem

+ Changed the line number for - Implementation via virtual types to read data from layout.xml

Author: SubrataBauri

1. Magento Architecture and Customization Techniques/3. Utilize configuration XML and variables scope.md

@@ -46,7 +46,7 @@
 
 # Interfaces for work with configs
 
-#### [\Magento\Framework\Config\Reader\Filesystem](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/Reader/Filesystem.php) -> [\Magento\Framework\Config\ReaderInterface](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/ReaderInterface.php)
+#### [\Magento\Framework\Config\Reader\Filesystem](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/Reader/Filesystem.php) -> [\Magento\Framework\Config\ReaderInterface](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/ReaderInterface.php)
 Gets .xsd names from schema locator, gets full .xml file list from file resolver, merges all files, validates, runs converter to get resulting array.
 - read(scope)
   + `fileResolver->get(_filename)`
@@ -56,36 +56,36 @@ Gets .xsd names from schema locator, gets full .xml file list from file resolver
 - `_idAttributes`, `_fileName`, `_schemaFile` (from schemaLocator), `_perFileSchema` (from schemaLocator), filename (menu.xml)
 - schemaFile from schemaLocator
 
-#### [\Magento\Framework\Config\ConverterInterface](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/ConverterInterface.php)
+#### [\Magento\Framework\Config\ConverterInterface](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/ConverterInterface.php)
 Convert an array to any format
 - `convert(\DOMDocument $source)`
 
-#### [\Magento\Framework\Config\SchemaLocatorInterface](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/SchemaLocatorInterface.php) - full path to .xsd
+#### [\Magento\Framework\Config\SchemaLocatorInterface](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/SchemaLocatorInterface.php) - full path to .xsd
 - `getPerFileSchema` - per file before merge
 - `getSchema` - merged file
 
-#### [\Magento\Framework\Config\ValidationStateInterface](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/ValidationStateInterface.php)
+#### [\Magento\Framework\Config\ValidationStateInterface](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/ValidationStateInterface.php)
 
 This interface retrieves the validation state.
 - `isValidationRequired()`
 
-[\Magento\Framework\App\Arguments\ValidationState](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/App/Arguments/ValidationState.php) is default implementation, that require validation only in developer mode.
+[\Magento\Framework\App\Arguments\ValidationState](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/App/Arguments/ValidationState.php) is default implementation, that require validation only in developer mode.
 
-#### [\Magento\Framework\Config\ScopeListInterface](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/ScopeListInterface.php)
+#### [\Magento\Framework\Config\ScopeListInterface](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/ScopeListInterface.php)
 
 This interface the list of all scopes.
 - `getAllScopes()`
 
-#### [\Magento\Framework\Config\Data](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/Data.php) -> [\Magento\Framework\Config\DataInterface](https://github.com/magento/magento2/blob/2.2-develop/lib/internal/Magento/Framework/Config/DataInterface.php)
+#### [\Magento\Framework\Config\Data](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/Data.php) -> [\Magento\Framework\Config\DataInterface](https://github.com/magento/magento2/blob/2.3/lib/internal/Magento/Framework/Config/DataInterface.php)
 
 Helps to get the configuration data in a specified scope.
 - `merge(array $config);`
 - `get($key, $default = null)`
 
 
 ###### Links and examples:
-- Product types configs model to read data from [product_types.xml](https://github.com/magento/magento2/blob/2.2-develop/app/code/Magento/Catalog/etc/product_types.xml): [\Magento\Catalog\Model\ProductTypes](https://github.com/magento/magento2/tree/2.2-develop/app/code/Magento/Catalog/Model/ProductTypes) 
-- Implementation via virtual types to read data from layout.xml: [Magento/Theme/etc/di.xml](https://github.com/magento/magento2/blob/2.2-develop/app/code/Magento/Theme/etc/di.xml#L48)
+- Product types configs model to read data from [product_types.xml](https://github.com/magento/magento2/blob/2.3/app/code/Magento/Catalog/etc/product_types.xml): [\Magento\Catalog\Model\ProductTypes](https://github.com/magento/magento2/tree/2.3/app/code/Magento/Catalog/Model/ProductTypes) 
+- Implementation via virtual types to read data from layout.xml: [Magento/Theme/etc/di.xml](https://github.com/magento/magento2/blob/2.3/app/code/Magento/Theme/etc/di.xml#L42)
 - https://www.atwix.com/magento-2/working-with-custom-configuration-files/