; Improve erc-services and upgrade documentation

; Improve erc-services and upgrade documentation

* doc/misc/erc.texi (Getting Help and Reporting Bugs): Describe
alternate method for upgrading from GNU ELPA.  This is a partial
workaround for bug#68660 discovered by ERC contributor Alcor.
* lisp/erc/erc-backend.el (erc-call-hooks): Add comment.
* lisp/erc/erc-services.el (erc-nickserv-alist): Doc.
* test/lisp/erc/erc-scenarios-base-renick.el
(erc-scenarios-base-renick-queries-bouncer): Adjust timeout.

(cherry picked from commit ff1d1f6df16a57acd699b18bdaa4baadff8269a1)