Update subgraph example docs

[dimitrovmaksim]

Signed-off-by: Maksim Dimitrov dimitrov.maksim@gmail.com

Description:
Updates the subgraph example readme

Related issue(s):

Fixes #

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

Base: 70.50% // Head: 70.50% // No change to project coverage 👍

Coverage data is based on head (762903d) compared to base (3dce956).
Patch has no changes to coverable lines.

❗ Current head 762903d differs from pull request most recent head 7d01728. Consider uploading reports for the commit 7d01728 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #607   +/-   ##
=======================================
  Coverage   70.50%   70.50%           
=======================================
  Files          16       16           
  Lines        1129     1129           
  Branches      192      192           
=======================================
  Hits          796      796           
  Misses        282      282           
  Partials       51       51           

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