Strengthen wording in JSP limitations regarding jar support

Closes gh-13420

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -2462,12 +2462,9 @@ source code documentation for details.
 When running a Spring Boot application that uses an embedded servlet container (and is
 packaged as an executable archive), there are some limitations in the JSP support.
 
-* With Tomcat it should work if you use war packaging, i.e. an executable war will work,
-  and will also be deployable to a standard container (not limited to, but including
-  Tomcat). An executable jar will not work because of a hard coded file pattern in Tomcat.
-
-* With Jetty it should work if you use war packaging, i.e. an executable war will work,
-  and will also be deployable to any standard container.
+* With Jetty and Tomcat it should work if you use war packaging. An executable war will
+  work when launched with `java -jar`, and will also be deployable to any standard
+  container. JSPs are not supported when using an executable jar.
 
 * Undertow does not support JSPs.