Azure Devops: Improve comment formatting

[mcdafydd]

Fixes #854

[codecov]

Codecov Report

Merging #863 into master will increase coverage by 0.02%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #863      +/-   ##
==========================================
+ Coverage   71.79%   71.82%   +0.02%     
==========================================
  Files          65       65              
  Lines        5216     5214       -2     
==========================================
  Hits         3745     3745              
+ Misses       1186     1184       -2     
  Partials      285      285

Impacted Files	Coverage Δ
server/events/vcs/azuredevops_client.go	74.05% <0%> (+0.92%)	⬆️

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