[easy] Fix a typo for "synchronizing" in log string

build/lib/builtInExtensions.ts

@@ -136,7 +136,7 @@ function writeControlFile(control: IControlFile): void {
 }
 
 export function getBuiltInExtensions(): Promise<void> {
-	log('Syncronizing built-in extensions...');
+	log('Synchronizing built-in extensions...');
 	log(`You can manage built-in extensions with the ${ansiColors.cyan('--builtin')} flag`);
 
 	const control = readControlFile();