Git LFS fixes for sample images

[JimBobSquarePants]

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• I have provided test coverage for my change (where applicable)

Description

Migrates 2 files that should have been pointers that weren't. This has been causing issues with forks and docs builds.

[codecov]

Codecov Report

Merging #211 (2cf1a32) into master (df19a19) will increase coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #211   +/-   ##
=====================================
  Coverage      86%    86%           
=====================================
  Files          62     62           
  Lines        1742   1742           
  Branches      257    257           
=====================================
+ Hits         1500   1502    +2     
+ Misses        176    175    -1     
+ Partials       66     65    -1     

Flag	Coverage Δ
unittests	86% <0%> (+<1%)	⬆️

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Impacted Files	Coverage Δ
...ching/LruCache/ConcurrentTLruCache{TKey,TValue}.cs	54% <0%> (+1%)	⬆️

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