* FIX [doc] fixed check markdown failed.
## Install from packagecloud source
-#### Install via DEB source
+### Install via DEB source
```shell
curl -s https://assets.emqx.com/scripts/install-nanomq-deb.sh | sudo bash
sudo apt-get install nanomq
```
-#### Install Deb package manually
+### Install Deb package manually
```shell
sudo bash -c 'cat << EOF > /etc/apt/sources.list.d/emqx_nanomq.list
deb [signed-by=/usr/share/keyrings/emqx_nanomq-archive-keyring.gpg] https://packages.emqx.com/emqx/nanomq/any/ any main
@@ -27,14 +27,14 @@ sudo apt-get install nanomq
-#### Install via RPM source
+### Install via RPM source
```shell
curl -s https://assets.emqx.com/scripts/install-nanomq-rpm.sh | sudo bash
sudo yum install -y nanomq
```
-#### Install RPM package manually
+### Install RPM package manually
```shell
sudo bash -c 'cat << EOF > /etc/yum.repos.d/emqx_nanomq.repo
