Update README.adoc (#999)

Author: BartoszMiller

README.adoc

@@ -134,7 +134,7 @@ NOTE: **SBM requires a JDK 17.**
 * Clone the repository
 * Change into root dir
 * Run `mvn clean install`
-* Find the jar in `applications/spring-shell/spring-boot-migrator.jar`
+* Find the jar in `applications/spring-shell/target/spring-boot-migrator.jar`
 
 WARNING: **Some integration tests use Docker so you'll need Docker to run them. +
 You can pass the `-DskipTests` flag to the `mvn` command to ignore tests.**