[#311] Add config params to component ReactMarkdown for corent parsing [

[mettled]

Ошибка в парсинге квадратных скобок возникала из-за того что react markdown использует для парсинга пакет remark-parse.
В обсуждении данной проблемы на гите react markdown предлагалось добавить функцию обработчик для ссылок.

После добавления функции обработчика, квадратные скобки [] и ссылки отображаются корректно.

[codecov-commenter]

Codecov Report

Merging #788 into master will decrease coverage by 1.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #788      +/-   ##
==========================================
- Coverage   79.53%   78.50%   -1.03%     
==========================================
  Files          87       87              
  Lines        1554     1554              
==========================================
- Hits         1236     1220      -16     
- Misses        318      334      +16     

Impacted Files	Coverage Δ
services/app/lib/codebattle/chat/server.ex	72.72% <0.00%> (-27.28%)	⬇️
...es/app/lib/codebattle_web/channels/chat_channel.ex	80.00% <0.00%> (-20.00%)	⬇️
...es/app/lib/codebattle_web/channels/game_channel.ex	80.32% <0.00%> (-6.56%)	⬇️

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