Code Visible Within Wallpaper

Hello,

My blog is https://www.MyYardRocks.com and I’m using StudioPress TwentyEleven and Church Theme.

I have wallpaper up and in the top left corner of all my posts and pages you can see the following:

[html][/code]

I’d like to remove that bit, but have no idea how.

I’m pretty much of a newb, and am just getting back to my blog after some carpal related downtime, so please be as simple and specific as possible when answering this post.

Thanks so much for any assistance.

All the best,

Diana