yourbittorrent: add alternate domain. resolves #6500

also covert keywords to lowercase

src/Jackett.Common/Definitions/yourbittorrent.yml

@@ -7,6 +7,7 @@
   encoding: UTF-8
   links:
     - https://yourbittorrent.com/
+    - https://yourbittorrent2.com/
   legacylinks:
     - https://yourbittorrent.host/
 
@@ -40,6 +41,7 @@
     keywordsfilters:
       - name: re_replace
         args: ["[\\s]+", "-"]
+      - name: tolower
     rows:
       selector: tr.table-default
     fields: