fix hdb console form parse error caused by duplicate end

[andreahlert]

Fixes #539

The #console-form hyperscript had a duplicate end that caused the parser to exit the on keydown handler early. The next set command got parsed as a feature-level declaration, which requires element-scoped variables, so it threw "variables declared at the feature level must be element scoped".

One end removed, debugger works again.

Tested locally with both inline breakpoint (on click breakpoint) and function breakpoint (def with breakpoint inside). HDB opens, expression eval works, no console errors.

[andreahlert]

netlify deploy preview is failing but looks like it's broken on all open PRs, not just this one. the change is just one end removed so shouldn't be related

@1cg when you get a chance