Content bug: many syntax snippets incorrectly use static Interface.member style

[foolip]

What page(s) did you find the problem on?

I found and fixed a number of these in #3452.

What is the problem?

The syntax snippets have been copied from the page title, and can be something like var sinkId = HTMLMediaElement.sinkId. This doesn't work, because sinkId is not a static member of HTMLMediaElement, it's on the prototype.

What did you expect to see?

Examples like this need to be var sinkId = mediaElement.sinkId or similar.

Did you test this? If so, how?

I searched using git grep -E '= [A-Z][A-Za-z0-9]+\.'. Many legitimate cases like Math.* and JSON.* show up, but there are still many incorrect cases left.

[foolip]

This came up in https://discourse.mozilla.org/t/incorrect-titles-for-method-property-articles/31641.

[sideshowbarker]

This is now being tracked in https://github.com/mdn/content/discussions/5121