[ISSUE #336]🚀Optimize get i32 of content_show#print_content method

[antcarryele]

Which Issue(s) This PR Fixes(Closes)

Fixes #336

Brief Description

How Did You Test This Change?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 13.57%. Comparing base (fa79f26) to head (ec67441).

Files	Patch %	Lines
rocketmq-cli/src/content_show.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #337   +/-   ##
=======================================
  Coverage   13.57%   13.57%           
=======================================
  Files         197      197           
  Lines       10762    10762           
=======================================
  Hits         1461     1461           
  Misses       9301     9301           

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