Add search-json examples

[dvora-h]

Pull Request check-list

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• Does $ tox pass with this change (including linting)?
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• Is there an example added to the examples folder (if applicable)?

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Description of change

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[codecov-commenter]

Codecov Report

Merging #1886 (5f8956b) into master (f0c0ab2) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1886      +/-   ##
==========================================
- Coverage   92.98%   92.95%   -0.03%     
==========================================
  Files          76       76              
  Lines       16387    16389       +2     
==========================================
- Hits        15237    15235       -2     
- Misses       1150     1154       +4     

Impacted Files	Coverage Δ
tests/test_cluster.py	98.03% <0.00%> (-0.26%)	⬇️
redis/sentinel.py	86.16% <0.00%> (+0.17%)	⬆️

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[chayim]

Strictly speaking - one doesn't have to flush their redis prior to use.

[chayim]

Can you add en example for updating a document and running queries? Can we also add some query aggregations (see tests)?