(fix) Updated examples for oracle price requests

[aarmoa]

• Updated OracePrice examples now that Indexer only supports returning prices for "pyth" oracle type

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d10fa53) 29.46% compared to head (c469534) 29.71%.
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #203      +/-   ##
==========================================
+ Coverage   29.46%   29.71%   +0.25%     
==========================================
  Files          17       17              
  Lines        2552     2564      +12     
==========================================
+ Hits          752      762      +10     
- Misses       1764     1766       +2     
  Partials       36       36              

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