[BUG] several typos in docs

[lw-yang]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

hertzbeat/home/docs/introduce.md

Line 106 in a23d446

> For users who have used various systems, the most troublesome thing is the installation, deployment, debugging and upgrading of various `agents'.

hertzbeat/home/versioned_docs/version-v1.4.x/introduce.md

Line 108 in a23d446

> For users who have used various systems, the most troublesome thing is the installation, deployment, debugging and upgrading of various `agents'.

hertzbeat/home/docs/start/upgrade.md

Line 29 in a23d446

- Refer to [Docker installation of HertzBeat] (docker-deploy) to create a new container using a new image. Note that the database file directory needs to be mounted `-v $(pwd)/data:/opt/hertzbeat/data`

hertzbeat/home/docs/start/upgrade.md

Line 34 in a23d446

- Refer to [Docker installation HertzBeat] (docker-deploy) to create a new container using the new image, and configure the database connection in `application.yml`

Expected Behavior

fix typos

Steps To Reproduce

hertzbeat/home/docs/introduce.md

Line 106 in a23d446

> For users who have used various systems, the most troublesome thing is the installation, deployment, debugging and upgrading of various `agents'.

hertzbeat/home/docs/start/upgrade.md

Line 29 in a23d446

- Refer to [Docker installation of HertzBeat] (docker-deploy) to create a new container using a new image. Note that the database file directory needs to be mounted `-v $(pwd)/data:/opt/hertzbeat/data`

hertzbeat/home/docs/start/upgrade.md

Line 34 in a23d446

- Refer to [Docker installation HertzBeat] (docker-deploy) to create a new container using the new image, and configure the database connection in `application.yml`

Environment

HertzBeat version(s): v1.5.0

Debug logs

No response

Anything else?

No response