docs($interpolateProvider): fixing docs

Author: IgorMinar

src/ng/interpolate.js

@@ -1,7 +1,7 @@
 'use strict';
 
 /**
- * @ngdoc function
+ * @ngdoc object
  * @name ng.$interpolateProvider
  * @function
  *
@@ -20,7 +20,8 @@ function $InterpolateProvider() {
    * @description
    * Symbol to denote start of expression in the interpolated string. Defaults to `{{`.
    *
-   * @prop {string=} value new value to set the starting symbol to.
+   * @param {string=} value new value to set the starting symbol to.
+   * @returns {string|self} Returns the symbol when used as getter and self if used as setter.
    */
   this.startSymbol = function(value){
     if (value) {
@@ -38,7 +39,8 @@ function $InterpolateProvider() {
    * @description
    * Symbol to denote the end of expression in the interpolated string. Defaults to `}}`.
    *
-   * @prop {string=} value new value to set the ending symbol to.
+   * @param {string=} value new value to set the ending symbol to.
+   * @returns {string|self} Returns the symbol when used as getter and self if used as setter.
    */
   this.endSymbol = function(value){
     if (value) {