docs: Fix the link to data source plugin

[ifrost]

Adding missing "/" in https://grafana.com/docs/pyroscope/latest/introduction/pyroscope-in-grafana/:

You can use Pyroscope within Grafana by using the Pyroscope data source plugin. This plugin lets you query Pyroscope data from within Grafana and visualize it alongside your other Grafana data.

[CLAassistant]

All committers have signed the CLA.

[knylander-grafana]

Thank you for fixing the link! Please sign the CLA and we'll get this merged.

[github-actions]

This PR must be merged before a backport PR will be created.

[github-actions]

This PR must be merged before a backport PR will be created.

[github-actions]

The backport to release/v1.8 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 branch
git switch --create backport-3611-to-release/v1.8 origin/release/v1.8
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 9202a1f9906070f94568e579bdf719b1af00729a

When the conflicts are resolved, stage and commit the changes:

git add . && git cherry-pick --continue

If you have the GitHub CLI installed:

# Push the branch to GitHub:
git push --set-upstream origin backport-3611-to-release/v1.8
# Create the PR body template
PR_BODY=$(gh pr view 3611 --json body --template 'Backport 9202a1f9906070f94568e579bdf719b1af00729a from #3611{{ "\n\n---\n\n" }}{{ index . "body" }}')
# Create the PR on GitHub
echo "${PR_BODY}" | gh pr create --title '[release/v1.8] docs: Fix the link to data source plugin' --body-file - --label 'type/docs' --label 'backport' --base release/v1.8 --milestone release/v1.8 --web

Or, if you don't have the GitHub CLI installed (we recommend you install it!):

# Push the branch to GitHub:
git push --set-upstream origin backport-3611-to-release/v1.8

# Create a pull request where the `base` branch is `release/v1.8` and the `compare`/`head` branch is `backport-3611-to-release/v1.8`.

# Remove the local backport branch
git switch main
git branch -D backport-3611-to-release/v1.8