ARROW-17092: [Docs] Add note about "Feather" to the IPC file format document

[eitsupi]

No description provided.

[github-actions]

https://issues.apache.org/jira/browse/ARROW-17092

[github-actions]

⚠️ Ticket has not been started in JIRA, please click 'Start Progress'.

[ursabot]

Benchmark runs are scheduled for baseline = a5f0c56 and contender = 1cfe124. 1cfe124 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Failed ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Failed ⬇️0.27% ⬆️0.0%] test-mac-arm
[Finished ⬇️0.27% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.14% ⬆️0.0%] ursa-thinkcentre-m75q
Buildkite builds:
[Failed] 1cfe1240 ec2-t3-xlarge-us-east-2
[Finished] 1cfe1240 test-mac-arm
[Finished] 1cfe1240 ursa-i9-9960x
[Finished] 1cfe1240 ursa-thinkcentre-m75q
[Failed] a5f0c56a ec2-t3-xlarge-us-east-2
[Failed] a5f0c56a test-mac-arm
[Finished] a5f0c56a ursa-i9-9960x
[Finished] a5f0c56a ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java