Links: update links to C-Lightning plugins.md

Author: harding

_posts/en/newsletters/2018-11-20-newsletter.md

@@ -346,7 +346,7 @@ newsletter's author.
 [cjp rz]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2018-November/001498.html
 [zmn rz]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2018-November/001547.html
 [zmn rz packetswitch]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2018-November/001553.html
-[cl plugin]: https://github.com/ElementsProject/lightning/blob/master/doc/plugins.md
+[cl plugin]: https://github.com/ElementsProject/lightning/blob/master/doc/PLUGINS.md
 [rusty wrapup]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2018-November/001569.html
 [ln1.1 outline]: https://github.com/lightningnetwork/lightning-rfc/wiki/Lightning-Specification-1.1-Proposal-States
 [input consolidations]: https://en.bitcoin.it/wiki/Techniques_to_reduce_transaction_fees#Consolidation

_posts/en/newsletters/2019-01-08-newsletter.md

@@ -149,6 +149,6 @@ commits].*
 [rm codesep]: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2018-December/016581.html
 [short-term options contracts]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2018-December/001752.html
 [cjp risk]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2018-May/001292.html
-[cl plugin event]: https://github.com/ElementsProject/lightning/blob/master/doc/plugins.md#event-notifications
+[cl plugin event]: https://github.com/ElementsProject/lightning/blob/master/doc/PLUGINS.md#event-notifications
 [cl helloworld.py]: https://github.com/ElementsProject/lightning/blob/master/contrib/plugins/helloworld.py
 [btcpay]: https://github.com/btcpayserver/btcpayserver