Remove double escape on labels addition in comments

[zeripath]

Fix #12786

Signed-off-by: Andrew Thornton art27@cantab.net

[codecov-commenter]

Codecov Report

Merging #12809 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #12809      +/-   ##
==========================================
- Coverage   43.17%   43.16%   -0.02%     
==========================================
  Files         651      651              
  Lines       72134    72134              
==========================================
- Hits        31143    31135       -8     
- Misses      35939    35948       +9     
+ Partials     5052     5051       -1     

Impacted Files	Coverage Δ
modules/util/timer.go	42.85% <0.00%> (-42.86%)	⬇️
modules/indexer/stats/db.go	52.17% <0.00%> (-8.70%)	⬇️
modules/git/utils.go	73.77% <0.00%> (-3.28%)	⬇️
models/unit.go	46.57% <0.00%> (-2.74%)	⬇️
routers/repo/view.go	37.47% <0.00%> (-0.65%)	⬇️
modules/git/repo.go	49.23% <0.00%> (-0.51%)	⬇️
modules/queue/unique_queue_disk_channel.go	55.38% <0.00%> (+1.53%)	⬆️
modules/git/blame.go	77.19% <0.00%> (+1.75%)	⬆️
modules/process/manager.go	75.00% <0.00%> (+2.50%)	⬆️

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