quiet the quickstart pip install

[dougbrn]

I noticed that the pip install command in the quickstart guide has a lot of output (potentially because we now use the magic command?). To address this, I've added the quiet flag. Alternatively we could opt to return to using !pip install lf-tape

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Before [3321b58]	After [5957a60]	Ratio	Benchmark (Parameter)
31.4±0.5ms	30.8±0.2ms	0.98	benchmarks.time_prune_sync_workflow
31.3±0.9ms	30.1±0.3ms	0.96	benchmarks.time_batch

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.78%. Comparing base (3321b58) to head (8e12db3).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #421   +/-   ##
=======================================
  Coverage   95.78%   95.78%           
=======================================
  Files          25       25           
  Lines        1755     1755           
=======================================
  Hits         1681     1681           
  Misses         74       74           

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[nevencaplar]

I agree. I tried puting a semicolon at the end of juypter cell, but that does not stop terminal output being rendered.