K8SPSMDB-1318 Documented concurrent reconciliation

[nastena1606]

new file: docs/reconciliation-concurrency.md
modified: mkdocs-base.yml

[Copilot]

Pull Request Overview

This PR adds documentation for configuring concurrent reconciliation in the Percona Server for MongoDB Operator. The documentation explains how reconciliation works and provides instructions for setting the number of concurrent workers.

• Added comprehensive documentation on reconciliation concurrency concepts and configuration
• Updated navigation structure to include the new documentation in two locations
• Provided practical examples for checking and updating the MAX_CONCURRENT_RECONCILES environment variable

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
mkdocs-base.yml	Added navigation entries for the new reconciliation concurrency documentation
docs/reconciliation-concurrency.md	Created new documentation explaining reconciliation concepts and configuration steps

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[Copilot]

The navigation entry lacks a descriptive title. It should include a human-readable title like the other entries in this section, for example: - \"Configure concurrent reconciliation\": reconciliation-concurrency.md

Suggested change

	- reconciliation-concurrency.md
	- "Configure concurrent reconciliation": reconciliation-concurrency.md