wireless-service: fix ubus enpoint name

[germanferrero]

It was left behind during a refactor

[codecov-commenter]

Codecov Report

Merging #914 (892039a) into master (8c41ceb) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #914      +/-   ##
==========================================
- Coverage   76.41%   76.38%   -0.03%     
==========================================
  Files          47       47              
  Lines        3934     3934              
==========================================
- Hits         3006     3005       -1     
- Misses        928      929       +1     

Impacted Files	Coverage Δ
...kages/lime-system/files/usr/lib/lua/lime/utils.lua	81.06% <0.00%> (-0.30%)	⬇️

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