docs/manual/resources.txt: change pastebin site URL

code.bulix.org no longer exists, suggest paste.ack.tf instead, as an
example.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

docs/manual/resources.txt

@@ -32,7 +32,7 @@ hosted on https://www.oftc.net/WebChat/[OFTC]. It is a useful place to
 ask quick questions or discuss on certain topics.
 +
 When asking for help on IRC, share relevant logs or pieces of code
-using a code sharing website, such as http://code.bulix.org.
+using a code sharing website, such as https://paste.ack.tf/.
 +
 Note that for certain questions, posting to the mailing list may be
 better as it will reach more people, both developers and users.