### Describe Your Changes
* `sort` param is unused by the current website engine, and was present only for compatibility
with previous website engine. It is time to remove it as it makes no effect
* re-structure guides content into folders to simplify assets management
### Checklist
The following checks are **mandatory**:
- [ ] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).
The changes are based on SEO report and supposed to improve
ranking and indexation by search engines by using prompt and unique titles
and by updating unreachable links.
It also updates links to have a simplified form and replaces relative links with absolute links
according to https://docs.victoriametrics.com/#documentation
---------
Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>
### Describe Your Changes
- moved files from root to VictoriaMetrics folder to be able to mount
operator docs and VictoriaMetrics docs independently
- added ability to run website locally
### Checklist
The following checks are **mandatory**:
- [ ] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).
Each Grafana dashboard has unique ID which can be used to fetch the dashboard
from grafana.com: https://grafana.com/grafana/dashboards/11176
The same dashboard can be accessed via URL with slug: https://grafana.com/grafana/dashboards/11176-victoriametrics-cluster/
But using slug implies that any change to dashboard name will break the link.
So it is better to just use ID, so the dashboard URL will never break.
This is follow-up for ff33e60a3d
Signed-off-by: hagen1778 <roman@victoriametrics.com>
