SemRush issues August 2022 - meta-descriptions v4

[Arcapas]

Description

This PR aims to list and correct the Wazuh documentation SemRush issues for August 2022.

Tasks

• [x] Review the following sections of the documentation searching for missing meta-descriptions:
  • [x] Upgrade guide
  • [x] Cloud service
  • [x] Cloud security
  • [ ] Container security

Checks

• [x] It compiles without warnings.
• [x] Spelling and grammar.
• [x] Used impersonal speech.
• [x] Used uppercase only on nouns.
• [ ] Updated the redirect.js script if necessary (check this guide).