Fix typos: "reparametrization" → "reparameterization" and "recommed" → "recommend"

[leopardracer]

Description:
This pull request corrects two typos in the codebase:

• Updates the spelling of "reparametrization" to "reparameterization" in the pruning callback documentation.
• Fixes the typo "recommed" to "recommend" in the strategy selection error message.

These changes improve code clarity and maintain consistency with standard terminology. No functional changes are introduced.

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📚 Documentation preview 📚: https://pytorch-lightning--20892.org.readthedocs.build/en/20892/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87%. Comparing base (43691d4) to head (727033f).
⚠️ Report is 198 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #20892   +/-   ##
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  Coverage      87%      87%           
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  Files         268      268           
  Lines       23442    23442           
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  Hits        20391    20391           
  Misses       3051     3051