[DOCS] Edit index operation summaries

[lcawl]

Relates to #3226

This PR edits the index operation summaries (https://www.elastic.co/docs/api/doc/elasticsearch/group/endpoint-indices) based on information from https://www.elastic.co/guide/en/elasticsearch/reference/current/indices.html. It also adds some descriptions that existed only in the latter.

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.clear_cache	🟢	4/4	4/4
indices.clone	🟢	5/5	5/5
indices.close	🟢	50/50	50/50
indices.disk_usage	🟢	5/5	5/5
indices.downsample	🟢	1/1	1/1
indices.field_usage_stats	🟢	5/5	5/5
indices.flush	🟢	41/41	41/41
indices.forcemerge	🟢	12/12	12/12
indices.promote_data_stream	⚪	Missing test	Missing test
indices.recovery	🟢	9/9	9/9
indices.reload_search_analyzers	🟢	2/2	2/2
indices.resolve_cluster	🔴	10/12	12/12
indices.segments	🔴	6/6	5/6
indices.shard_stores	🔴	5/5	4/5
indices.shrink	🟢	5/5	5/5
indices.split	🟢	11/11	11/11
indices.stats	🔴	113/113	30/112
indices.unfreeze	🟢	1/1	1/1

You can validate these APIs yourself by using the make validate target.

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.clear_cache	🟢	4/4	4/4
indices.clone	🟢	5/5	5/5
indices.close	🟢	50/50	50/50
indices.disk_usage	🟢	5/5	5/5
indices.downsample	🟢	1/1	1/1
indices.field_usage_stats	🟢	5/5	5/5
indices.flush	🟢	41/41	41/41
indices.forcemerge	🟢	12/12	12/12
indices.promote_data_stream	⚪	Missing test	Missing test
indices.recovery	🟢	9/9	9/9
indices.reload_search_analyzers	🟢	2/2	2/2
indices.resolve_cluster	🔴	10/12	12/12
indices.segments	🔴	6/6	5/6
indices.shard_stores	🔴	5/5	4/5
indices.shrink	🟢	5/5	5/5
indices.split	🟢	11/11	11/11
indices.stats	🔴	113/113	30/112
indices.unfreeze	🟢	1/1	1/1

You can validate these APIs yourself by using the make validate target.

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.clear_cache	🟢	4/4	4/4
indices.clone	🟢	5/5	5/5
indices.close	🟢	50/50	50/50
indices.disk_usage	🟢	5/5	5/5
indices.downsample	🟢	1/1	1/1
indices.field_usage_stats	🟢	5/5	5/5
indices.flush	🟢	41/41	41/41
indices.forcemerge	🟢	12/12	12/12
indices.promote_data_stream	⚪	Missing test	Missing test
indices.put_template	🔴	45/46	46/46
indices.recovery	🟢	9/9	9/9
indices.reload_search_analyzers	🟢	2/2	2/2
indices.resolve_cluster	🔴	10/12	12/12
indices.segments	🔴	6/6	5/6
indices.shard_stores	🔴	5/5	4/5
indices.shrink	🟢	5/5	5/5
indices.split	🟢	11/11	11/11
indices.stats	🔴	113/113	30/112
indices.unfreeze	🟢	1/1	1/1

You can validate these APIs yourself by using the make validate target.

[github-actions]

The backport to 8.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-8.x 8.x
# Navigate to the new working tree
cd .worktrees/backport-8.x
# Create a new branch
git switch --create backport-3268-to-8.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 7d436a0c6cf664d154e011f7457d76d617a448a9
# Push it to GitHub
git push --set-upstream origin backport-3268-to-8.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-8.x

Then, create a pull request where the base branch is 8.x and the compare/head branch is backport-3268-to-8.x.

[github-actions]

The backport to 8.17 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-8.17 8.17
# Navigate to the new working tree
cd .worktrees/backport-8.17
# Create a new branch
git switch --create backport-3268-to-8.17
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 7d436a0c6cf664d154e011f7457d76d617a448a9
# Push it to GitHub
git push --set-upstream origin backport-3268-to-8.17
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-8.17

Then, create a pull request where the base branch is 8.17 and the compare/head branch is backport-3268-to-8.17.

[lcawl]

💚 All backports created successfully

Status	Branch	Result
✅	8.x

Questions ?

Please refer to the Backport tool documentation

[lcawl]

💚 All backports created successfully

Status	Branch	Result
✅	8.17

Questions ?

Please refer to the Backport tool documentation