Add droidcam page

[malfisya]

Description

• Added droidcam page (still not sure of the placement)
• Fixes a little typo KsysGuard page

Submitter Checklist

• [ ] Squashed commits with git rebase -i (if needed)

[malfisya]

"Camera" or "Cameras" section seems appropriate. I just have to make new folder inside/under "Software", correct?

[davidjharder]

You also need a _category_.json file, take a look at one of the existing categories like "networking"