fix(preset/english): add word boundary to 'shit' pattern

The pattern `shit` was matching on names such as "harshit". Fix this
issue by adding a word boundary assertion at the start.

Thanks to @kaushal-aubie for the report.

Closes #93

src/preset/english.ts

@@ -364,12 +364,11 @@ export const englishDataset = new DataSet<{ originalWord: EnglishProfaneWord }>(
 	.addPhrase((phrase) =>
 		phrase
 			.setMetadata({ originalWord: 'shit' })
-			.addPattern(pattern`shit`)
+			.addPattern(pattern`|shit`)
 			.addWhitelistedTerm('s hit')
 			.addWhitelistedTerm('sh it')
 			.addWhitelistedTerm('shi t')
-			.addWhitelistedTerm('shitake')
-			.addWhitelistedTerm('mishit'),
+			.addWhitelistedTerm('shitake'),
 	)
 	.addPhrase((phrase) => phrase.setMetadata({ originalWord: 'slut' }).addPattern(pattern`s[s]lut`))
 	.addPhrase((phrase) => phrase.setMetadata({ originalWord: 'spastic' }).addPattern(pattern`|spastic`))