docs: fix type for form action example

[bertybot]

Problem

The Type for this section is invalid in most typescript configurations since there really is no way of typing this for the event. So, Typescript users may get unnecessarily frustrated copying this code.

Fix

Update docs section to use currentTarget which will make this docs section valid in typescript code.

As for the actual style of the fix I tried to keep it simple though it is kindof ugly with the chaining. So, please make an edit if you have a solution that more fits the style of the docs

Tests

I came across this while implementing something similar in my own code. I used this typing and it worked.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 762d3b7

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