Fix typo in Spring Session documentation

See gh-24020

Author: PascalSchumacher

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

@@ -5954,7 +5954,7 @@ For setting the timeout of the session you can use the configprop:spring.session
 If that property is not set, the auto-configuration falls back to the value of configprop:server.servlet.session.timeout[].
 
 You can take control over Spring Session's configuration using `@Enable*HttpSession` (Servlet) or `@Enable@WebSession` (Reactive).
-This will cause the auto-configuratio to back off.
+This will cause the auto-configuration to back off.
 Spring Session can then be configured using the annotation's attributes rather than the previously described configuration properties.