[DOCS]: Correct _cat/count method to GET

[charlotte-hoblik]

Updates the documentation to correctly list the _cat/count endpoint as a GET request instead of POST.

Connected to: elastic/docs-content#4598

Preview:

[github-actions]

Following you can find the validation changes against the target branch for the APIs.

No changes detected.

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

[pquentin]

This isn't a mistake, _cat/count also supports POST since Elasticsearch 9.3.0: elastic/elasticsearch#138369. I don't know if there's a way to specify that in the docs, though.

[charlotte-hoblik]

Thanks @pquentin! To clarify, I didn't remove POST, I just swapped the order so the UI defaults to GET (since that's the main use case). Good call on the 9.3 update though. I'll add a note to the description clarifying that POST is supported for serverless routing.

[KyleOnK8s]

LGTM!

[pquentin]

Thanks! LGTM.

I've removed the 9.1 backport, as there isn't any new 9.1 release planned.

[github-actions]

The backport to 9.2 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-9.2 9.2
# Navigate to the new working tree
cd .worktrees/backport-9.2
# Create a new branch
git switch --create backport-6013-to-9.2
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 f2e86a6bbc03b1e2732d163cf6ca3e07ba578ac1
# Push it to GitHub
git push --set-upstream origin backport-6013-to-9.2
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-9.2

Then, create a pull request where the base branch is 9.2 and the compare/head branch is backport-6013-to-9.2.

[github-actions]

The backport to 9.3 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-9.3 9.3
# Navigate to the new working tree
cd .worktrees/backport-9.3
# Create a new branch
git switch --create backport-6013-to-9.3
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 f2e86a6bbc03b1e2732d163cf6ca3e07ba578ac1
# Push it to GitHub
git push --set-upstream origin backport-6013-to-9.3
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-9.3

Then, create a pull request where the base branch is 9.3 and the compare/head branch is backport-6013-to-9.3.