Audit and fix remaining deprecated session terminology in documentation

[devin-ai-integration]

Problem

There may be remaining references to deprecated session terminology throughout the documentation that need to be updated.

Files to Audit

• All documentation files in docs/ directory
• Look for 'sesion' typos, deprecated session functions, and outdated terminology

Changes Needed

• Replace deprecated session references with current trace terminology
• Fix any spelling errors ('sesion' -> 'session' -> 'trace')
• Update function references (start_session/end_session -> start_trace/end_trace)
• Ensure consistent terminology throughout

Context

Comprehensive audit needed to catch any remaining deprecated terminology that wasn't caught in initial fixes.

Assignee

Please assign to Dwij when creating