Replaced var with const in API doc examples

lib/jasmine-core/jasmine.js

@@ -5241,7 +5241,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
  *   };
  * }
  *
- * var actual = {
+ * const actual = {
  *   n: 2,
  *   otherFields: "don't care"
  * };
@@ -6387,7 +6387,7 @@ getJasmineRequireObj().toHaveClass = function(j$) {
    * @since 3.0.0
    * @param {Object} expected - The class name to test for
    * @example
-   * var el = document.createElement('div');
+   * const el = document.createElement('div');
    * el.className = 'foo bar baz';
    * expect(el).toHaveClass('bar');
    */

src/core/matchers/matchersUtil.js

@@ -652,7 +652,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
  *   };
  * }
  *
- * var actual = {
+ * const actual = {
  *   n: 2,
  *   otherFields: "don't care"
  * };

src/core/matchers/toHaveClass.js

@@ -6,7 +6,7 @@ getJasmineRequireObj().toHaveClass = function(j$) {
    * @since 3.0.0
    * @param {Object} expected - The class name to test for
    * @example
-   * var el = document.createElement('div');
+   * const el = document.createElement('div');
    * el.className = 'foo bar baz';
    * expect(el).toHaveClass('bar');
    */