Fix stream docs spelling

Change `teh` to `the`

Author: SergiuNegara

lib/index.js

@@ -106,7 +106,7 @@ module.exports.reload = noop("reload");
  * @param {Object} [opts.match] Resulting files to reload. The path is from the
  * root of the site (not the root of your project).  You can use '**' to recurse
  * directories.
- * @param {Object} [opts.once] Only reload on the first changed file in teh stream.
+ * @param {Object} [opts.once] Only reload on the first changed file in the stream.
  * @since 2.6.0
  * @returns {*}
  */