Update core.d.ts

Improve file-type detectors array description

Co-authored-by: Sindre Sorhus <[email protected]>

Author: Borewit

core.d.ts

@@ -184,8 +184,9 @@ export function fileTypeStream(webStream: AnyWebReadableStream<Uint8Array>, opti
 
 export declare class FileTypeParser {
 	/**
-	File-type detectors, initialized with a single entry holding the build in detector function.
-	The array is used to iterate over all detectors, as long as the function returns `undefined`.
+	File type detectors.
+	
+	Initialized with a single entry holding the built-in detector function.
 	*/
 	detectors: Detector[];