Fix qBittorrent

[CLHatch]

Add lines under the [Preferences] heading instead of the end of the file.

Fixes #688

---

• I have read the contributing guideline and understand that I have made the correct modifications

• PR's are done against the develop branch.

---

Bug fixes

• When submitting bugfixes please show a before and after screenshot of the fix, and a description of what the fix does.

Description:

Benefits of this PR and context:

How Has This Been Tested?

Source / References:

[CLHatch]

Installing the docker mod using the :qbittorrent-hatchpatch tag works as expected. I used variables for everything, but this is in my qbittorrent.env file:

QBITTORRENT_VERSION='5.1.0'
DOCKER_MODS="${_THEMEPARK_IMAGE_?}:qbittorrent-hatchpatch"
TP_DOMAIN="${_TP_DOMAIN_?}"
TP_SCHEME="${_TP_SCHEME_?}"
TP_THEME="${_TP_THEME_?}

It is now placing the config items in the correct location, and I can verify that the theme applies. I also verified a second set wasn't added on restarting the container.