Add a hint what "Externals" are

[derjanb]

Discussed in #1707

^{Originally posted by Malix-Off February 14, 2023}
Hello!

What is the difference between userscript vs external updates?

[derjanb]

A hint what "Externals" are was added at 4.19.6178 (crx|xpi)

Chrome/Edge users, please download the crx file linked above and drag and drop it to the extensions page chrome://extensions.
Firefox users please install the BETA version or check for BETA version updates at about:addons

For a quick fix please export your settings and scripts as zip or (JSON) file at the "Utilities" tab and import it back at the fixed BETA version.