Typo in ./run.sh script message

**Description**
typo in message of ./run.sh
~~~
This script expects Confluent Platform version 7.4.1 but the running version is could.
To proceed please either: change the examples repo branch to could or update the running Confluent Platform to version 7.4.1.
~~~

https://docs.confluent.io/platform/current/tutorials/examples/security/rbac/docs/index.html

[root@broker1 scripts]# export CONFLUENT_HOME=/usr/bin/confluent
[root@broker1 scripts]# ./run.sh
✔ Confluent Platform installed
confluentinc/cli info checking S3 for tag '3.15.1'
confluentinc/cli info found version: 3.15.1 for 3.15.1/linux/amd64
confluentinc/cli info NOTICE: see licenses located in /tmp/tmp.r5WTe8UmdF/confluent
confluentinc/cli info installed /tmp/tmp.RjZbdooHe5/confluent
confluentinc/cli info please ensure /tmp/tmp.RjZbdooHe5 is in your PATH

This script expects Confluent Platform version 7.4.1 but the running version is could.
To proceed please either: change the examples repo branch to could or update the running Confluent Platform to version 7.4.1.

**Environment**
- 7.4.1-post, 7.5.0-post

- Operating System:
-RHEL 9, MacOS

Start with ./run.sh and locate the version-mismatch message shown in the issue. Confirm the intended wording against the surrounding script logic and the linked RBAC example documentation, then run the script's relevant checks to verify the corrected message.

Written by the indexing model from the issue text.