Polish "Add reference to ssh shell spring boot starter"

Closes gh-14496

Author: snicoll

spring-boot-project/spring-boot-starters/README.adoc

@@ -136,12 +136,12 @@ do as they were designed before this was clarified.
 | https://projects.spring.io/spring-batch/[Spring Batch] (Advanced usage)
 | https://github.com/codecentric/spring-boot-starter-batch-web
 
+| https://projects.spring.io/spring-shell/[Spring Shell]
+| https://github.com/fonimus/ssh-shell-spring-boot
+
 | https://github.com/savantly-net/sprout-platform[Sprout Platform]
 | https://github.com/savantly-net/sprout-platform/tree/master/spring/sprout-spring-boot-starter
 
-| https://github.com/fonimus/ssh-shell-spring-boot[Ssh Spring Shell]
-| https://github.com/fonimus/ssh-shell-spring-boot
-
 | SSH Daemon
 | https://github.com/anand1st/sshd-shell-spring-boot