Reference documentation URL mismatch for 3.4

[dlehammer]

Hi Spring Shell gurus,

I guessed the URL for the 3.4 reference documentation, as the link on the overview ( https://spring.io/projects/spring-shell#learn ) currently points to the latest documentation instead.

Ie. https://docs.spring.io/spring-shell/reference/index.html should be https://docs.spring.io/spring-shell/reference/3.4/index.html 🙏

Best regards,

DH