Remove trailing space

Author: shadowspawn

test/yargs-parser.cjs

@@ -1499,7 +1499,7 @@ describe('yargs-parser', function () {
     })
 
     it('should set - as an embedded value of f', function () {
-      // special case dash trailing short option 
+      // special case dash trailing short option
       const argv = parser(['-f-'])
       argv.should.have.property('f', '-')
       argv.should.have.property('_').with.length(0)