documentation

Pull request #4456: feature/ZBXNEXT-10347-7.5-D

Merge in WEB/documentation from feature/ZBXNEXT-10347-7.5-D to release/8.0

* commit '69e7536c025db579f369ad1741ffc5e960cb088b': (22 commits)
  [ZBXNEXT-10347] split entry
  [ZBXNEXT-10347] updated "precache" option description
  [ZBXNEXT-10347] added noteclassics about --ttl option when using history_all.sh
  [ZBXNEXT-10347] removed SQLite recommendation
  [ZBXNEXT-10347] simplified "Configuring ClickHouse" section; replaced curl with clickhouse-client; used "<password>" in all commands
  [ZBXNEXT-10347, DEV-5041] temporarily removed "Configuring encryption between Zabbix and ClickHouse" section (to be added later)
  [ZBXNEXT-10347] optimized Zabbix server startup and Elasticsearch performance
  [ZBXNEXT-10347] updated "precache" option description
  [ZBXNEXT-10347] added links to Elasticsearch and ClickHouse
  [ZBXNEXT-10347] removed number from heading
  [ZBXNEXT-10347] fixed page order
  [ZBXNEXT-10347] fixed heading size
  [ZBXNEXT-10347] added instructions for configuring encryption between Zabbix and ClickHouse
  [ZBXNEXT-10347] moved "Configuring ClickHouse data storage period" section
  [ZBXNEXT-10347] fixed typo
  [ZBXNEXT-10347] updated command: replaced source path with package path, added "-d zabbix"
  [ZBXNEXT-10347] replaced password with placeholder
  [ZBXNEXT-10347] fixed link
  [ZBXNEXT-10347] added details to HistoryProvider parameter options
  [ZBXNEXT-10347, ZBXNEXT-10625] temporarily removed Elasticsearch 8 docs (to be added later)
  ...