pidgin/nest

Inspired by a question asked in the r/pidgin subreddit, add a bit more
clarification that an account at Hub is required for PidginChat.

Testing Done:
Ran hugo locally and verified that the page appeared as expected.

Reviewed at https://reviews.imfreedom.org/r/636/
[
"Afrikaans",
"Albanian",
"American English",
"Amharic",
"Arabic",
"Armenian",
"Australian English",
"Azerbaijani",
"Belarusian Latin",
"Bengali",
"Bokmal Norwegian",
"Bosnian",
"British English",
"Bulgarian",
"Canadian English",
"Catalan",
"Chinese",
"Czech",
"Danish",
"Dutch",
"Dzongkha",
"English",
"Esperanto",
"Estonian",
"Euskera (Basque)",
"Finnish",
"French",
"Galician",
"Georgian",
"German",
"Greek",
"Gujarati",
"Hebrew",
"Hindi",
"Hong Kong Chinese",
"Hungarian",
"Indonesian",
"Irish",
"Italian",
"Japanese",
"Kannada",
"Khmer",
"Korean",
"Kurdish",
"Lao",
"Lithuanian",
"Macedonian",
"Malay",
"Marathi",
"Mongolian",
"Myanmar (Burmese)",
"Nepali",
"Norwegian Nynorsk",
"Occitan",
"Oriya",
"Pashto",
"Persian",
"Polish",
"Portuguese",
"Portuguese-Brazil",
"Punjabi",
"Romanian",
"Russian",
"Serbian",
"Serbian Latin",
"Simplified Chinese",
"Sinhala",
"Slovak",
"Slovenian",
"Spanish",
"Swahili",
"Swedish",
"Tamil",
"Telugu",
"Thai",
"Traditional Chinese",
"Turkish",
"Ukrainian",
"Urdu",
"Valencian-Catalan",
"Vietnamese",
"Xhosa"
]