doc: revise tsconfig.json note

PR-URL: #57353
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Zeyu "Alex" Yang <himself65@outlook.com>

Author: styfle

doc/api/typescript.md

@@ -93,7 +93,7 @@ but we recommend version 5.8 or newer with the following `tsconfig.json` setting
 
 > \[!NOTE]
 > Use the `noEmit` option if you intend to only execute `*.ts` files, for example a build script.
-> You won't need this flag if you intend to distribute `*.js` files for performance reasons.
+> You won't need this flag if you intend to distribute `*.js` files.
 
 ### Determining module system