Bugzilla

Steps how to reproduce with installation of official De SeaMonkey 2.53.2 beta 1 Mozilla/5.0 (NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0 Build 20200402090541 (Default Classic Theme, my normal created User Profile) on German WIN7 64bit

1) Launch Browser
2) ˋ<f1> for Help → Search for "Proy" → Go to first hit "proxypreferences" → Find  " Link Prefetching FAQ "below heading "Advanced Preferences - Cache" and "End User Guide to Proxy AutoConfiguration" below "Advanced Preferences - Proxies" → do your own testsˊ 
   »  Link Prefetching FAQ http://www.mozilla.org/projects/netlib/Link_Prefetching_FAQ.html for me leads to https://developer.mozilla.org/de/docs/Web/HTTP/Link_prefetching_FAQ, which does exist, but may be we should directly link to there?       
   »  End User Guide to Proxy AutoConfiguration http://www.mozilla.org/catalog/end-user/customizing/enduserPAC.html for me leads to https://www.mozilla.org/de/catalog/end-user/customizing/enduserPAC.html, which does not exist (error 404)   😥    

Additional information:
a) Source file is cs_nav_prefs_advanced.xhtml from seamonkey-2.53.2b1.en-US.langpack.xpi.
b) Probably all LangPacks / Translations are affected.
c) To where should we link for " End User Guide to Proxy AutoConfiguration"?
d) please feel free to split away one of these bugs if fix is not possible for both in parallel.

Steps how to reproduce with installation of official De SeaMonkey 2.53.2 beta 1 Mozilla/5.0 (NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0 Build 20200402090541 (Default Classic Theme, my normal created User Profile) on German WIN7 64bit

1) Launch Browser
2) ˋ<f1> for Help → Search for "Proy" → Go to first hit "proxypreferences" → Find  " Link Prefetching FAQ "below heading "Advanced Preferences - Cache"  → do your own testsˊ 
   »  Link Prefetching FAQ http://www.mozilla.org/projects/netlib/Link_Prefetching_FAQ.html for me leads to https://developer.mozilla.org/de/docs/Web/HTTP/Link_prefetching_FAQ, which does exist, but may be we should directly link to there?        

Additional information:
a) Source file is cs_nav_prefs_advanced.xhtml from seamonkey-2.53.2b1.en-US.langpack.xpi.
b) Probably all LangPacks / Translations are affected.
c) I haven't a clue how to test for other languages because I get forwarded to a German language explidation page.