Updated README (OpenMage#2618)

Author: sreichel

README.md

@@ -155,9 +155,27 @@ For full list of changes, you can [compare tags](https://github.com/OpenMage/mag
 ### Changes to SOAP/WSDL
 
 Since `19.4.17`/`20.0.15` we changed the `targetNamespace` of all the WSDL files (used in the API modules), from `Magento` to `OpenMage`.
-If your custom modules extends OpenMage's APIs with a custom WSDL file and there are some hardcoded `targetNamespace="urn:Magento"` string, your APIs may stop working.
-Please replace all occurrences of `targetNamespace="urn:Magento"` with `targetNamespace="urn:OpenMage"` (or alternatively `targetNamespace="urn:{{var wsdl.name}}"`) to avoid any problem.
-To find which files need the modification you can run `grep -rn 'urn:Magento' --include \*.xml` from the root directory of your project.
+If your custom modules extends OpenMage's APIs with a custom WSDL file and there are some hardcoded `targetNamespace="urn:Magento"` strings, your APIs may stop working.
+
+Please replace all occurrences of 
+
+```
+targetNamespace="urn:Magento"
+```
+with
+```
+targetNamespace="urn:OpenMage"
+```
+or alternatively 
+```
+targetNamespace="urn:{{var wsdl.name}}"
+```
+ to avoid any problem.
+
+To find which files need the modification you can run this command from the root directory of your project.
+```
+grep -rn 'urn:Magento' --include \*.xml
+```
 
 ## Development Environment with ddev