commment typo

Author: nmccready

test/init.js

@@ -283,7 +283,7 @@ test('init: should not throw when source file for sourceContent not found', func
         .write(file);
 });
 
-// vinyl 2.X breaks this spec, exactly sure why but it is due to this commit
+// vinyl 2.X breaks this spec, not exactly sure why but it is due to the following commit
 // https://github.com/gulpjs/vinyl/commit/ece4abf212c83aa3e2613c57a4a0fe96171d5755
 test('init: should use unix style paths in sourcemap', function(t) {
     var file = makeFile();