book.toml: Exclude "userbase.kde.org" from linkcheck for now.

flexibeast · flexibeast · commit 8adfe24189ad · 2020-08-06T10:43:20.000+10:00
diff --git a/book.toml b/book.toml
@@ -13,4 +13,4 @@ optional = true
 [output.linkcheck]
 optional = true
 follow-web-links = true
-exclude = [ "kernel.org", "ntp.org", "\\.onion", "localhost", "hushan.tech" ]
+exclude = [ "kernel.org", "ntp.org", "\\.onion", "localhost", "hushan.tech", "userbase.kde.org" ]
