Fixed various typos and unified some formats in documentation (backport #996)

[mergify]

Description

Fixed some typos found while reading the documentation, fixed some links to c-InstanceHandle_Unknown and unified the format for the references to the different QOS_DEFAULT options.

@Mergifyio backport 3.1.x 3.0.x 2.14.x 2.10.x 2.6.x

Contributor Checklist

• Commit messages follow the project guidelines.
• N/A Code snippets related to the added documentation have been provided.
• Documentation tests pass locally.
• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• CI passes without warnings or errors.

---

This is an automatic backport of pull request #996 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 0a46fe1 has failed:

On branch mergify/bp/2.6.x/pr-996
Your branch is up to date with 'origin/2.6.x'.

You are currently cherry-picking commit 0a46fe1.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   docs/fastdds/dds_layer/core/status/status.rst
	modified:   docs/fastdds/dds_layer/domain/domainParticipant/createDomainParticipant.rst
	modified:   docs/fastdds/dds_layer/domain/domainParticipant/domainParticipant.rst
	modified:   docs/fastdds/dds_layer/publisher/dataWriter/dataWriter.rst
	modified:   docs/fastdds/dds_layer/publisher/publisher/createPublisher.rst
	modified:   docs/fastdds/dds_layer/publisher/publisher/publisher.rst
	modified:   docs/fastdds/dds_layer/subscriber/dataReader/dataReader.rst
	modified:   docs/fastdds/dds_layer/subscriber/sampleInfo/sampleInfo.rst
	modified:   docs/fastdds/dds_layer/subscriber/subscriber/createSubscriber.rst
	modified:   docs/fastdds/dds_layer/subscriber/subscriber/subscriber.rst
	modified:   docs/fastdds/dds_layer/topic/topic/createTopic.rst
	modified:   docs/fastdds/dds_layer/topic/topic/topic.rst
	modified:   docs/fastdds/discovery/discovery_server.rst

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   docs/fastdds/dds_layer/publisher/dataWriter/createDataWriter.rst
	both modified:   docs/fastdds/dds_layer/subscriber/dataReader/createDataReader.rst

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally