Updates info about Struts 2.3.8
diff --git a/struts2-secure-jakarta-multipart-parser-plugin/README.md b/struts2-secure-jakarta-multipart-parser-plugin/README.md
index 0676d3d..783c96d 100644
--- a/struts2-secure-jakarta-multipart-parser-plugin/README.md
+++ b/struts2-secure-jakarta-multipart-parser-plugin/README.md
@@ -24,6 +24,9 @@
             name="secure-jakarta"
             scope="default"/>
     
+      <!-- when running Struts 2.3.8 use this constant name -->
+      <constant name="struts.multipart.handler" value="secure-jakarta"/>
+      <!-- when running Struts 2.3.9 - 2.3.31 use this constant name -->
       <constant name="struts.multipart.parser" value="secure-jakarta"/>
  ```
 
diff --git a/struts2-secure-jakarta-stream-multipart-parser-plugin/README.md b/struts2-secure-jakarta-stream-multipart-parser-plugin/README.md
index 984ba6d..a7aaf5b 100644
--- a/struts2-secure-jakarta-stream-multipart-parser-plugin/README.md
+++ b/struts2-secure-jakarta-stream-multipart-parser-plugin/README.md
@@ -24,6 +24,9 @@
             name="secure-jakarta-stream"
             scope="default"/>
     
+      <!-- when running Struts 2.3.8 use this constant name -->
+      <constant name="struts.multipart.handler" value="secure-jakarta-stream"/>
+      <!-- when running Struts 2.3.9 - 2.3.31 use this constant name -->
       <constant name="struts.multipart.parser" value="secure-jakarta-stream"/>
  ```