Fix spelling errors in away team validation warning message

[Copilot]

Corrects three typos in the warning message displayed when the away team's position validation fails in check_inputs_game_object().

Changes:

• Fixed "playingfrom" → "playing from"
• Fixed "At the start of period" → "At the start of period" (removed double space)
• Fixed "centroid ofthe" → "centroid of the"

The corrected message now reads:

"The away team should be represented as playing from right to "
f"left the whole game. At the start of period {period} the x "
f"centroid of the away team is {centroid_x}."

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.55%. Comparing base (d4e2dc2) to head (57c745a).
⚠️ Report is 1 commits behind head on 332-kloppy-skillcorner-error.

Additional details and impacted files

@@                      Coverage Diff                      @@
##           332-kloppy-skillcorner-error     #336   +/-   ##
=============================================================
  Coverage                         99.55%   99.55%           
=============================================================
  Files                                65       65           
  Lines                              4973     4973           
=============================================================
  Hits                               4951     4951           
  Misses                               22       22           

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