Minor documentation fixes and fixing dependencies. Version bump to v0.26.2

[slundqui]

• Fixes to code examples in readme.
• Removing broken link in tutorial. The documentation for output event types were removed when moving event objects from agent0 to pypechain. Ideally this would point to documentation within the hyperdrive repo where events are defined in solidity.
• Only pinning minimum versions in hyperdrivepy and hyperdrivetypes.
• Version bump of agent0 to v0.26.2 in preparation for release.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.62%. Comparing base (edbb7f0) to head (c16e317).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1741      +/-   ##
==========================================
- Coverage   80.93%   80.62%   -0.31%     
==========================================
  Files          96       96              
  Lines        7113     7113              
==========================================
- Hits         5757     5735      -22     
- Misses       1356     1378      +22     

Flag	Coverage Δ
unittests	80.62% <ø> (-0.31%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.