clarify avro support & general style improvements (#11975)
clarify avro support & general style improvements (#11975)

* clarify avro support & general style improvements

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update docs/development/extensions-core/avro.md

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>

* Update avro.md

remove redundancy

Co-authored-by: Katya Macedo  <66b860448142ee7dadb76a1dc4dfd1eeed9285dd@users.noreply.github.com>
druid-io/druid,nishantmonu51/druid,nishantmonu51/druid,monetate/druid,druid-io/druid,monetate/druid,monetate/druid,nishantmonu51/druid,monetate/druid,monetate/druid,druid-io/druid,nishantmonu51/druid,monetate/druid,nishantmonu51/druid,nishantmonu51/druid,nishantmonu51/druid,druid-io/druid,monetate/druid,druid-io/druid