Update custom-pronunciations.mdx

fern/build-with-sonic/capabilities/custom-pronunciations.mdx

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   Learn how to specify custom pronunciations for words that are hard to get right, like proper nouns or domain-specific terms.
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-Both the Sonic and Sonic Preview models support custom pronunciations in your transcripts. They do so in slightly different ways. The Sonic model, along with the dated versions (e.g. `sonic-2024-12-12`) uses Sonic-flavored IPA phonemes for English. For languages other than English as well as for the Sonic Preview model, we uses MFA-style IPA. We will soon be updating all models to use MFA-style IPA.
+Both the Sonic and Sonic Preview models support custom pronunciations in your transcripts. They do so in slightly different ways. 
+
+<Note>
+The Sonic model, along with the dated versions (e.g. `sonic-2024-12-12`) uses Sonic-flavored IPA phonemes for English. For languages other than English as well as for the Sonic Preview model, we uses MFA-style IPA. We will soon be updating all models to use MFA-style IPA.
+</Note>
 
 Custom words should be wrapped in double angle brackets `<<` `>>` , with pipe characters `|` between phonemes and no whitespace, e.g. `Can I <<g|ˈɛ|t|>> <<h|ɑː|l|ˈə|p|eɪ|n|y|ˌoʊ|>> on that?` for Sonic-flavored IPA or `Can I <<ɡ|ɛ|t>> <<cʰ|ɛ|tʃ|ə|p>> on that?` for MFA-style IPA. Each individual word should be wrapped in it’s own set of angle brackets.
 
 # Sonic-flavored IPA
 
-We've compiled a pronunciation guide for the style of IPA that works most effectively with Sonic English.
-
-<Note>
-Our model follows the [English phonology article on Wikipedia](https://en.wikipedia.org/wiki/English\_phonology) for most phonemes, but in spots where our model requires different notation than you may expect, we've included a blue `<=` in the margins.
-</Note>
+Here is a pronunciation guide for Sonic-flavored IPA.It follows the [English phonology article on Wikipedia](https://en.wikipedia.org/wiki/English\_phonology) for most phonemes, but in spots where our model requires different notation than you may expect, we've included a blue `<=` in the margins.
 
 You can copy/paste some of these uncommon symbols from the original [charts here](https://docs.google.com/spreadsheets/d/1OJbiKtxLyodpNPqVfOu43X2HloLsAixTtFppEuQ\_4pI/edit?usp=sharing).