docs(select): minor markdown syntax fix

src/ng/directive/select.js

@@ -18,7 +18,7 @@ var ngOptionsMinErr = minErr('ngOptions');
  * In many cases, `ngRepeat` can be used on `<option>` elements instead of `ngOptions` to achieve a
  * similar result. However, the `ngOptions` provides some benefits such as reducing memory and
  * increasing speed by not creating a new scope for each repeated instance, as well as providing
- * more flexibility in how the `select`'s model is assigned via `select as`. `ngOptions should be
+ * more flexibility in how the `select`'s model is assigned via `select as`. `ngOptions` should be
  * used when the `select` model needs to be bound to a non-string value. This is because an option
  * element can only be bound to string values at present.
  *