Added a missing 'cd' command to 2.11.4

2-IOC-deployment.md

@@ -318,6 +318,7 @@ Note: we do a distclean before rebuilding because support is being removed from
 Start the IOC and confirm the error is resolved.
 
 ```
+$ cd ${IOC_DIR}/xxx/iocBoot/iocxxx
 $ ./softioc/xxx.sh run
 ```