feat: revise mqtt tls error msg

[Yisaer]

[codecov[bot]]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (ea60779) 63.99% compared to head (1453977) 64.00%. Report is 3 commits behind head on master.

Files	Patch %	Lines
internal/topo/connection/clients/mqtt/mqtt.go	66.67%	2 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2626      +/-   ##
==========================================
+ Coverage   63.99%   64.00%   +0.01%     
==========================================
  Files         330      330              
  Lines       38327    38338      +11     
==========================================
+ Hits        24524    24535      +11     
- Misses      11637    11639       +2     
+ Partials     2166     2164       -2     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.