[docs] Fix dumped file names in troubleshooting guide

[linasm]

What this PR does / why we need it:
The docs did not contain valid names of dumped files.

Special notes for your reviewer:

Does this PR introduce a user-facing and/or backwards incompatible change?:

Does this PR require updating code package or user-facing documentation?:

[codecov]

Codecov Report

Merging #2727 into master will increase coverage by 6.9%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master   #2727     +/-   ##
========================================
+ Coverage    53.9%   60.8%   +6.9%     
========================================
  Files        1003    1015     +12     
  Lines       91413   92930   +1517     
========================================
+ Hits        49292   56568   +7276     
+ Misses      38002   31922   -6080     
- Partials     4119    4440    +321     

Flag	Coverage Δ
#aggregator	64.3% <ø> (+8.4%)	⬆️
#cluster	77.6% <ø> (+33.7%)	⬆️
#collector	64.3% <ø> (+10.0%)	⬆️
#dbnode	63.6% <ø> (+2.2%)	⬆️
#m3em	52.6% <ø> (+1.4%)	⬆️
#m3ninx	60.9% <ø> (+2.8%)	⬆️
#m3nsch	51.1% <ø> (+22.7%)	⬆️
#msg	73.2% <ø> (-0.2%)	⬇️
#query	48.8% <ø> (+10.6%)	⬆️
#x	63.0% <ø> (+6.8%)	⬆️

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[ChrisChinchilla]

@linasm I'll approave for now and likely test that these commands all work later when I rewrite the content fully.