Merge #781: doc: Fix IRC links

ff81428 doc: Fix IRC links (MarcoFalke)

Pull request description:

  Fixes 259fd8b#r51521757

ACKs for top commit:
  kanzure:
    ACK ff81428
  harding:
    ACK ff81428 .  Reviewed diff, quickly checked one of the web.libera.chat links, and ensured it passes tests.

Tree-SHA512: 38db9915f0081452eeed470d5ea655376d3b101ddce115b2f38f00fa1ae0ca4f4f00bafe4c058bc9b473676ef5cbe27247e009ffcf0e0e442d898b02589c57b4

Author: harding

_includes/references.md

@@ -117,9 +117,9 @@
 [BIP174]: https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki
 
 [@bitcoincoreorg]: https://twitter.com/bitcoincoreorg
-[#bitcoin-core-dev]: https://kiwiirc.com/nextclient/#irc://irc.libera.chat/#bitcoin-core-dev
-[#bitcoin-core-builds]: https://kiwiirc.com/nextclient/#irc://irc.libera.chat/#bitcoin-core-builds
-[#bitcoin-core-gui]: https://kiwiirc.com/nextclient/#irc://irc.libera.chat/#bitcoin-core-gui
+[#bitcoin-core-dev]: https://web.libera.chat/#bitcoin-core-dev
+[#bitcoin-core-builds]: https://web.libera.chat/#bitcoin-core-builds
+[#bitcoin-core-gui]: https://web.libera.chat/#bitcoin-core-gui
 [issues]: https://github.com/bitcoin/bitcoin/issues
 [pulls]: https://github.com/bitcoin/bitcoin/pulls
 [BitcoinCoreDocBips]: https://github.com/bitcoin/bitcoin/blob/master/doc/bips.md

_posts/en/pages/2016-01-01-meetings.md

@@ -7,8 +7,8 @@ name: meetings
 permalink: /en/meetings/
 version: 4
 ---
-The project holds several recurring meetings in `#bitcoin-core-dev` on
-irc.freenode.net.  Everyone is welcome to attend.  Logs and
+The project holds several recurring meetings in the `#bitcoin-core-dev` IRC
+channel on Libera Chat ([webchat][bitcoin-core-dev-IRC-webchat]).  Everyone is welcome to attend.  Logs and
 automatically-generated meeting minutes may be found [here][meetbot].
 
 Current meeting schedule:
@@ -23,7 +23,7 @@ calendar].
 [Here as ical format][meeting calendar ical] to subscribe via a calendar app.
 
 If you have any questions about the date or time of an upcoming meeting,
-please ask in `#bitcoin-core-dev` on irc.libera.chat.
+please ask in the IRC channel.
 
 Anyone interested in contributing to Bitcoin Core is also
 encouraged to attend the weekly Bitcoin Core PR Review Club meetings,
@@ -33,6 +33,7 @@ website][review club] for details.
 Summaries of old meetings from 2015 to 2018 are now [listed on a
 separate page][summaries].
 
+[bitcoin-core-dev-IRC-webchat]: https://web.libera.chat/#bitcoin-core-dev
 [meetbot]: http://www.erisian.com.au/meetbot/bitcoin-core-dev/
 [meeting calendar]: https://calendar.google.com/calendar?cid=MTFwcXZkZ3BkOTlubGliZjliYTg2MXZ1OHNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ
 [meeting calendar ical]: https://calendar.google.com/calendar/ical/11pqvdgpd99nlibf9ba861vu8s%40group.calendar.google.com/public/basic.ics