docs(angular.copy): fix formatting

Using `<br>` messes formatting (due to a bug in
`dgeni`/`dgeni-packages`). This started breaking in c387e0d.

Fixes #16671

Author: gkalpak

src/Angular.js

@@ -791,16 +791,16 @@ function arrayRemove(array, value) {
  * * If `source` is not an object or array (inc. `null` and `undefined`), `source` is returned.
  * * If `source` is identical to `destination` an exception will be thrown.
  *
- * <br />
+ * <p><!-- Using a `br` tag messes up the formatting due a doc-gen bug. --></p>
  * <div class="alert alert-warning">
  *   Only enumerable properties are taken into account. Non-enumerable properties (both on `source`
  *   and on `destination`) will be ignored.
  * </div>
  *
- * @param {*} source The source that will be used to make a copy.
- *                   Can be any type, including primitives, `null`, and `undefined`.
- * @param {(Object|Array)=} destination Destination into which the source is copied. If
- *     provided, must be of the same type as `source`.
+ * @param {*} source The source that will be used to make a copy. Can be any type, including
+ *     primitives, `null`, and `undefined`.
+ * @param {(Object|Array)=} destination Destination into which the source is copied. If provided,
+ *     must be of the same type as `source`.
  * @returns {*} The copy or updated `destination`, if `destination` was specified.
  *
  * @example