docs: add some comments about the toSolidityAddress function

[Neurone]

Description:
toSolidityAddress function can be misleading; see this StackOverflow issue for details.

This PR adds some comments to make the usage of that function clearer.

Related issue(s):

N/A

Notes for reviewer:

N/A

Checklist

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

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.49%. Comparing base (5467a47) to head (4c75bbc).

❗ Current head 4c75bbc differs from pull request most recent head db36ceb. Consider uploading reports for the commit db36ceb to get more accurate results

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2220   +/-   ##
========================================
  Coverage    84.48%   84.49%           
========================================
  Files          305      305           
  Lines        76285    76287    +2     
========================================
+ Hits         64448    64457    +9     
+ Misses       11837    11830    -7     

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