Typo correction that was breaking instructions.

[federicosan]

Description

There was an additional backtick breaking instructions on #### Docker for-mac troubleshooting section, and it has been corrected.

Refers/Fixes

#6310

Testing

This is a documentation change.

[codecov]

Codecov Report

Merging #6352 into master will decrease coverage by 0.58%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #6352      +/-   ##
==========================================
- Coverage   28.18%   27.60%   -0.59%     
==========================================
  Files         280      282       +2     
  Lines       25953    26116     +163     
  Branches     3823     3847      +24     
==========================================
- Hits         7316     7209     -107     
- Misses      18351    18643     +292     
+ Partials      286      264      -22     

Impacted Files	Coverage Δ
app/app/context.py	0.00% <0.00%> (-75.65%)	⬇️
app/retail/helpers.py	28.57% <0.00%> (-42.86%)	⬇️
app/retail/templatetags/matches.py	62.50% <0.00%> (-37.50%)	⬇️
app/search/models.py	64.28% <0.00%> (-23.72%)	⬇️
app/quests/views.py	16.29% <0.00%> (-9.70%)	⬇️
app/search/views.py	28.12% <0.00%> (-7.88%)	⬇️
app/git/utils.py	39.52% <0.00%> (-1.65%)	⬇️
app/avatar/utils.py	12.99% <0.00%> (-1.52%)	⬇️
app/chat/tasks.py	13.96% <0.00%> (-1.36%)	⬇️
app/retail/views.py	21.18% <0.00%> (-1.21%)	⬇️
... and 16 more

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