Description text for custom header upload may be misleading in some contexts.

[mfields]

The paragraph in the "Upload Image" section of Appearance -> Header contains the following text: "You can upload a custom header image to be shown at the top of your site instead of the default one."

This is a bit misleading in the event that the active theme does not include a default image.

An easy solution may be to remove the following text from the sentence: " instead of the default one". What do you think?

[macmanx]

Also, note "shown at the top of your site"

Not all header images are shown at the top of your site.

[nacin]

I am OK with 20211b.diff​. Let's get a second opinion on the string.

[helen]

Sounds good to me.

[nacin]

This text already changed back in 3.4 and no longer has the "instead of the default one".

Normally I'd be okay with "at the top of your site" but we're also talking about a "header" image. Closing.

[SergeyBiryukov]

Duplicate of #20992.