Docs: Remove phrase duplication in api-conventions.asciidoc
Docs: Remove phrase duplication in api-conventions.asciidoc

Closes #7263

fubuki/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch