Update version references in documentation

Closes gh-1835

Author: rstoyanchev

src/dist/readme.txt

@@ -20,7 +20,7 @@ It is a powerful controller engine that addresses the "C" in MVC.
 
 2. RELEASE NOTES
 ----------------
-Spring Web Flow 3.0 requires JDK 17 and Spring Framework 6.0.x as a baseline.
+Spring Web Flow 4.0 requires JDK 17 and Spring Framework 7 as a baseline.
 
 Release distribution contents:
 

src/docs/asciidoc/overview.adoc

@@ -6,10 +6,11 @@ It covers implementing flows in end-user applications and working with the featu
 It also covers extending the framework and the overall architectural model.
 
 [[_system_requirements]]
-=== Web Flow Requirements
+=== Web Flow 4.0 Baseline
 
 * Java 17 or higher.
-* Spring Framework 6.0 or higher.
+* Spring Framework 7.0 baseline
+* Servlet 6.1
 
 === Resources
 

src/docs/asciidoc/spring-faces.adoc

@@ -5,7 +5,7 @@ Spring Web Flow provides a JavaServer Faces (JSF) integration that lets you use
 Web Flow also provides a Spring Security tag library for use in JSF environments.
 See <<_spring_faces_security_taglib>> for more details.
 
-Spring Web Flow 3.0 requires JSF 4.0 or higher.
+Spring Web Flow 4.0 requires JSF 4.1 or higher.
 
 [[_spring_faces_config_web.xml]]
 === Configuring `web.xml`