Translate inline weakpoint names

[dseguin]

Summary

None

Purpose of change

Faalagorn on discord mentioned that the weakpoint name strings weren't showing up in Transifex.

Describe the solution

Add a check in the monster parser in lang/string_extractor/parsers/.

Describe alternatives you've considered

Testing

./lang/update_pot.sh

...

#. ~ Sentence fragment describing a weakpoint for monster "massive stag beetle"
#. ~ Sentence fragment describing a weakpoint for monster "giant diving beetle"
#: data/json/monsters/insect_spider.json
#: data/mods/TropiCataclysm/monsters/tropical_insect_spider.json
msgid "a soft section of chitin"
msgstr ""

#. ~ Sentence fragment describing a weakpoint for monster "massive stag beetle"
#. ~ Sentence fragment describing a weakpoint for monster "giant diving beetle"
#: data/json/monsters/insect_spider.json
#: data/mods/TropiCataclysm/monsters/tropical_insect_spider.json
msgid "a crack in the chitin"
msgstr ""

...

Additional context