Addresses the plural inflections listed in #2079, but there may be more of them.

@peternewman @luzpaz
Should we suggest weaponry as well? Since most dictionaries considered weaponry as uncountable noun (singular form only).

weaponaries->weaponry, weaponries,

• Uncountable noun

  • https://www.oxfordlearnersdictionaries.com/definition/english/weaponry?q=weaponries
  • https://www.lexico.com/definition/weaponry?locale=en
  • https://www.ldoceonline.com/dictionary/weaponry
  • https://www.collinsdictionary.com/dictionary/english/weaponry
  • https://dictionary.cambridge.org/spellcheck/english/?q=weaponries (Plural word not found)
  • https://www.macmillandictionary.com/us/spellcheck/american/?q=weaponries (Plural word not found)

• Redirected or unclear:

  • https://www.dictionary.com/browse/weaponries (Redirected to singular)
  • https://www.merriam-webster.com/dictionary/weaponries (Redirected to singular)
  • https://www.thefreedictionary.com/weaponries (Redirected to singular, but mention related)

• Word available in dictionary

  • https://github.com/marcoagpinto/aoo-mozilla-en-dict/tree/master/en_GB%20(Marco%20Pinto)
  • https://extensions.libreoffice.org/en/extensions/show/english-dictionaries (Use aoo-mozilla-en-dict)

• Both countable and uncountable:

  • https://www.wordhippo.com/what-is/the-plural-of/weaponry.html (Both, but in general, plural form will also be weaponry)

• Usage of weaponries word:

  • https://www.nasdaq.com/articles/boeing-ba-wins-%24392m-contract-for-ch-47f-renew-aircraft-2021-10-06

My wrong, I could just remove weaponaries. Neither the typo weaponaries nor weaponries are found in code out there (except in dictionaries):

• https://github.com/search?q=weaponaries&type=code
• https://github.com/search?q=weaponries&type=code
• https://searchcode.com/?q=weaponaries
• https://searchcode.com/?q=weaponries

I did find a few occurrences of weaponries with Google, although it suggests using weaponry instead.
https://www.google.com/search?q=weaponries
Among them is a scientific paper using weaponries:
Secretome weaponries of Cochliobolus lunatusinteracting with potato leaf at different temperature regimes reveal a CL[xxxx]LHM - motif

Searching weaponaries still resulted with some 54 hits. IMO, I think it is fine.
https://github.com/search?q=weaponaries&type=code

LGTM.

Rebased.

Rebased.

@luzpaz Time permitting, could you have a look at this merge request?