Grammar and Spelling Fixes in Documentation

[Madmaxs2]

Changes Made

1. client/src/gamedata/en/descriptions/levels/magicnum_complete.md:

• Changed "habilities" → "abilities"
• Reason: Corrected spelling error. "Habilities" is not a valid English word; "abilities" is the correct spelling.

2. client/src/gamedata/en/descriptions/levels/elevator_complete.md:

• Changed "depends" → "depending"
• Reason: Improved grammar. "Depending" is the correct form when describing a conditional relationship in this context.

3. client/src/gamedata/en/descriptions/levels/doubleentrypoint_complete.md:

• Changed "purpose" → "purposes"
• Reason: Grammatical agreement. Since we're referring to educational purposes in general, the plural form is more appropriate.

Summary

These changes improve the readability and professional quality of the documentation by:

1. Correcting spelling errors
2. Improving grammatical consistency
3. Ensuring proper word usage in context

All changes are purely textual and do not affect any functional code.