docs($http): fix a typo (his --> this)

cloverharvest · gkalpak · commit 41f90e5fb0e1 · 2016-04-15T01:25:09.000+03:00
Closes angular#14430
diff --git a/src/ng/http.js b/src/ng/http.js
@@ -555,7 +555,7 @@ function $HttpProvider() {
      * That means changes to the properties of `data` are not local to the transform function (since Javascript passes objects by reference).
      * For example, when calling `$http.get(url, $scope.myObject)`, modifications to the object's properties in a transformRequest
      * function will be reflected on the scope and in any templates where the object is data-bound.
-     * To prevent his, transform functions should have no side-effects.
+     * To prevent this, transform functions should have no side-effects.
      * If you need to modify properties, it is recommended to make a copy of the data, or create new object to return.
      * </div>
      *

Original file line number	Diff line number	Diff line change
`@@ -555,7 +555,7 @@ function $HttpProvider() {`
`555`	`555`	* That means changes to the properties of `data` are not local to the transform function (since Javascript passes objects by reference).
`556`	`556`	* For example, when calling `$http.get(url, $scope.myObject)`, modifications to the object's properties in a transformRequest
`557`	`557`	`* function will be reflected on the scope and in any templates where the object is data-bound.`
`558`		`- * To prevent his, transform functions should have no side-effects.`
	`558`	`+ * To prevent this, transform functions should have no side-effects.`
`559`	`559`	`* If you need to modify properties, it is recommended to make a copy of the data, or create new object to return.`
`560`	`560`	`* </div>`
`561`	`561`	`*`