fix: correct typos and rename map change exception

[honest-build]

Summary

• Fix various spelling/grammar issues in documentation and in-game text (README, docs, mods README, side loops).
• Correct typo in multiplayer connector messages and docstrings.
• Rename MapChangeExeption to MapChangeException and update all usages for consistency and readability.

Details

• Updated user-facing text:
  • Fixed phrases like talk the the, by items, powerfull, and several comment/guide wording issues.
  • Clarified some docstrings and development guide comments (e.g. “will be added”).
• Code changes:
  • Renamed MapChangeExeption → MapChangeException in:
    • src/pokete/classes/game/map_change_exception.py
    • src/pokete/classes/game/__init__.py
    • src/pokete/__main__.py
    • src/pokete/classes/doors.py
  • Kept existing attack identifiers like politure / chocer unchanged to avoid breaking save data or protocol compatibility.

Rationale

These changes improve readability and polish of both the player-facing text and the codebase, while keeping all identifiers and data structures that could affect compatibility intact.

Testing

• Ran static checks on edited Python files (no new linter errors).
• Verified that all references to MapChangeExeption have been updated to MapChangeException.
• Basic import path sanity check for the renamed exception.

[lxgr-linux]

LGTM