[openwrt/openwrt] README: switch from freenode to oftc

[LEDE Commits]

aparcar pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/144bf23e5ae4db91a64df0709a4e909561152351

commit 144bf23e5ae4db91a64df0709a4e909561152351
Author: Paul Spooren <mail at aparcar.org>
AuthorDate: Sat Jun 12 12:38:30 2021 -1000

    README: switch from freenode to oftc
    
    We recently switched from freenode.net to oftc.net, reflect that in the
    README and update the links.
    
    Signed-off-by: Paul Spooren <mail at aparcar.org>
    (cherry picked from commit 5a66165cb1863693ce7901d153f5e41c91a130e1)
---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index f4497de3c0..051c2469fa 100644
--- a/README.md
+++ b/README.md
@@ -74,13 +74,13 @@ For a list of supported devices see the [OpenWrt Hardware Database](https://open
 ### Support Community
 
 * [Forum](https://forum.openwrt.org): For usage, projects, discussions and hardware advise.
-* [Support Chat](https://webchat.freenode.net/#openwrt): Channel `#openwrt` on freenode.net.
+* [Support Chat](https://webchat.oftc.net/#openwrt): Channel `#openwrt` on **oftc.net**.
 
 ### Developer Community
 
 * [Bug Reports](https://bugs.openwrt.org): Report bugs in OpenWrt
 * [Dev Mailing List](https://lists.openwrt.org/mailman/listinfo/openwrt-devel): Send patches
-* [Dev Chat](https://webchat.freenode.net/#openwrt-devel): Channel `#openwrt-devel` on freenode.net.
+* [Dev Chat](https://webchat.oftc.net/#openwrt-devel): Channel `#openwrt-devel` on **oftc.net**.
 
 ## License