docs(ngRepeat): fix wrong paragraph order

These paragraphes are related to `track by`, not to `as alias`.

Closes #9226

Author: artch

src/ng/directive/ngRepeat.js

@@ -100,13 +100,6 @@
  *     For example: `item in items` is equivalent to `item in items track by $id(item)`. This implies that the DOM elements
  *     will be associated by item identity in the array.
  *
- *   * `variable in expression as alias_expression` – You can also provide an optional alias expression which will then store the
- *     intermediate results of the repeater after the filters have been applied. Typically this is used to render a special message
- *     when a filter is active on the repeater, but the filtered result set is empty.
- *
- *     For example: `item in items | filter:x as results` will store the fragment of the repeated items as `results`, but only after
- *     the items have been processed through the filter.
- *
  *     For example: `item in items track by $id(item)`. A built in `$id()` function can be used to assign a unique
  *     `$$hashKey` property to each item in the array. This property is then used as a key to associated DOM elements
  *     with the corresponding item in the array by identity. Moving the same object in array would move the DOM
@@ -119,6 +112,13 @@
  *     For example: `item in items | filter:searchText track by item.id` is a pattern that might be used to apply a filter
  *     to items in conjunction with a tracking expression.
  *
+ *   * `variable in expression as alias_expression` – You can also provide an optional alias expression which will then store the
+ *     intermediate results of the repeater after the filters have been applied. Typically this is used to render a special message
+ *     when a filter is active on the repeater, but the filtered result set is empty.
+ *
+ *     For example: `item in items | filter:x as results` will store the fragment of the repeated items as `results`, but only after
+ *     the items have been processed through the filter.
+ *
  * @example
  * This example initializes the scope to a list of names and
  * then uses `ngRepeat` to display every person: