Update ChatRepository.php

[innocente205]

Lookup the 'command' instead of the 'slug' to allow changing the systembot name.

[codecov]

Codecov Report

Merging #1284 into master will increase coverage by 0.93%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #1284      +/-   ##
============================================
+ Coverage     25.97%   26.91%   +0.93%     
  Complexity     4219     4219              
============================================
  Files           300      300              
  Lines         13345    13345              
============================================
+ Hits           3467     3592     +125     
+ Misses         9878     9753     -125     

Impacted Files	Coverage Δ	Complexity Δ
app/Repositories/ChatRepository.php	71.25% <100.00%> (+3.59%)	47.00 <0.00> (ø)
app/Services/MovieScrapper.php	61.11% <0.00%> (-22.23%)	10.00% <0.00%> (ø%)
app/Models/User.php	37.30% <0.00%> (-5.96%)	122.00% <0.00%> (ø%)
app/Models/Torrent.php	19.71% <0.00%> (-4.23%)	32.00% <0.00%> (ø%)
app/Http/Controllers/API/TorrentController.php	60.85% <0.00%> (-0.86%)	108.00% <0.00%> (ø%)
app/Http/Controllers/BonusController.php	89.36% <0.00%> (+0.26%)	52.00% <0.00%> (ø%)
app/Http/Controllers/CommentController.php	78.86% <0.00%> (+1.50%)	45.00% <0.00%> (ø%)
...pp/Http/Controllers/Staff/MassActionController.php	68.75% <0.00%> (+6.25%)	6.00% <0.00%> (ø%)
app/Services/Data/Movie.php	33.33% <0.00%> (+15.87%)	40.00% <0.00%> (ø%)
... and 6 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3235e6e...7a11999. Read the comment docs.