Update SimCLR model model example

[IgorSusmelj]

Changes

• Adds more info to the SimCLR model example here: https://docs.lightly.ai/self-supervised-learning/examples/simclr.html
• Example of the updated version is attached
  screencapture-1234-examples-simclr-html-2025-01-17-17_58_15.pdf

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.24%. Comparing base (d2c9f5f) to head (d1dc70b).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1782   +/-   ##
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  Coverage   85.24%   85.24%           
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  Files         163      163           
  Lines        6833     6833           
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  Hits         5825     5825           
  Misses       1008     1008           

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