✏️ Adds definition for 'mx' (#408)

* Updates dependencies

* Adds definition draft

* Fixes url

* Fixes excerpt

* Sentence fix

11ty/definitions/mx.md

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+---
+title: Mx.
+slug: mx
+speech: noun
+defined: true
+excerpt: gender-neutral honorific or title of courtesy, equivalent to Ma'am, Madam, Miss, Mr, Mrs, Mrs, Sir.
+reading:
+  - text: 'This Gender-Neutral Word Could Replace Mr. and Ms.'
+  - text: 'Merriam-Webster definition'
+    href: https://www.merriam-webster.com/dictionary/MX
+---
+
+gender-neutral honorific or title of courtesy, equivalent to Ma'am, Madam, Miss, Mr, Mrs, Mrs, Sir.
+
+## Considerations
+
+In formal settings, defaulting to gendered titles of courtesy can misgender people. While titles and salutations are not necessarily indicative of gender, there tends to be a corrolation. For example, **Ma'am** tends to be used to refer to woman- or femme-assumed individuals.
+
+Mx allows you to maintain formality without making assumptions about people's titles/saluations and/or gender.
+
+In the same vein of [pronouns](/definitions/pronouns), it's important to not make assumptions about which honorific to use for someone and instead ask for explicit consent whenever possible.
+
+Many (though not all) nonbinary people might opt to use Mx.
+
+## Pronunciation
+
+mix (məks, ˈmiks)