examples/consolecallback.py: Use hex-encoding for ^]
Use hex encoding for ^] to prevent potential rendering issues in web browsers when viewing the file on GitLab.
While at it, make the file an executable as a Shebang line is present.
Suggested-by: Dawson Rosell dawson.rosell@ibm.com Reviewed-by: Boris Fiuczynski fiuczy@linux.ibm.com Signed-off-by: Marc Hartmayer mhartmay@linux.ibm.com