docs: fix formatting for `Signals.md`
The DevDocs scraper for GJS' in-tree documentation expects a page title
of #/<h1>, so amend Signals.md to use that format.
closes devdocsgjs#55 (closed)
Edited by Andy Holmes
The DevDocs scraper for GJS' in-tree documentation expects a page title
of #/<h1>, so amend Signals.md to use that format.
closes devdocsgjs#55 (closed)