docs: Update README.md [skip ci]

Signed-off-by: duyet <[email protected]>

Author: duyet

README.md

@@ -5,33 +5,36 @@
 
 The simple Next.js dashboard that relies on `system.*` tables to help monitor and provide an overview of your ClickHouse cluster.
 
-Features:
+**Features:**
 
 - Query monitor: current queries, query history, query resources (memory, parts read, file_open, ...), most expensive queries, most used tables or columns, etc.
 - Cluster monitor: total memory/CPU usage, distributed queue, global settings, mergetree settings, metrics, etc.
 - Tables and parts information: size, row count, compression, part size, etc., at the column level detail.
 - Useful tools: Zookeeper data exploration, query EXPLAIN, kill queries, etc.
 - Visualization metric charts: queries and resource usage, number of merges/mutation, merge performance, query performance, etc.
 
-**Demo** (_The ClickHouse server running on my homelab so can be slow sometimes_):
+## Demo
+
+_The ClickHouse server running on my homelab so can be slow sometimes_:
 
 - [clickhouse-monitoring.vercel.app](https://clickhouse-monitoring.vercel.app)
 - [clickhouse.duyet.net](https://clickhouse.duyet.net)
 
-**Documentation**:
+## Documentation
+
+at https://duyet.github.io/clickhouse-monitoring
 
-- https://duyet.github.io/clickhouse-monitoring/
-  - [Getting Started](https://duyet.github.io/clickhouse-monitoring/getting-started)
-    - [Local Development](https://duyet.github.io/clickhouse-monitoring/getting-started/local)
-    - [User Role and Profile](https://duyet.github.io/clickhouse-monitoring/getting-started/clickhouse-requirements)
-    - [Enable System Tables](https://duyet.github.io/clickhouse-monitoring/getting-started/clickhouse-enable-system-tables)
-  - [Deployments](https://duyet.github.io/clickhouse-monitoring/deploy)
-    - [Vercel](https://duyet.github.io/clickhouse-monitoring/deploy/vercel)
-    - [Docker](https://duyet.github.io/clickhouse-monitoring/deploy/docker)
-    - [Kubernetes Helm Chart](https://duyet.github.io/clickhouse-monitoring/deploy/k8s)
-  - [Advanced](https://duyet.github.io/clickhouse-monitoring/advanced)
+- [Getting Started](https://duyet.github.io/clickhouse-monitoring/getting-started)
+  - [Local Development](https://duyet.github.io/clickhouse-monitoring/getting-started/local)
+  - [User Role and Profile](https://duyet.github.io/clickhouse-monitoring/getting-started/clickhouse-requirements)
+  - [Enable System Tables](https://duyet.github.io/clickhouse-monitoring/getting-started/clickhouse-enable-system-tables)
+- [Deployments](https://duyet.github.io/clickhouse-monitoring/deploy)
+  - [Vercel](https://duyet.github.io/clickhouse-monitoring/deploy/vercel)
+  - [Docker](https://duyet.github.io/clickhouse-monitoring/deploy/docker)
+  - [Kubernetes Helm Chart](https://duyet.github.io/clickhouse-monitoring/deploy/k8s)
+- [Advanced](https://duyet.github.io/clickhouse-monitoring/advanced)
 
-**Screenshots**:
+## Screenshots
 
 ![](.github/screenshots/screenshot_1.png)
 ![](.github/screenshots/screenshot_2.png)