Java + Python documentation fix, changes newlines to html br

[spacether]

Java + Python documentation fix, changes summary/description newlines to html br

• also fixes a bug where tag to api was not ordered the same very time

PR checklist

• Read the contribution guidelines.
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  mvn clean package 
  ./bin/generate-samples.sh
  ./bin/utils/export_docs_generators.sh
  

  Commit all changed files.
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