docs(ngMock/$exceptionHandler): fix formatting

Too much indentation, made text get formatted as code block.

src/ngMock/angular-mocks.js

@@ -220,13 +220,13 @@ angular.mock.$ExceptionHandlerProvider = function() {
    * @param {string} mode Mode of operation, defaults to `rethrow`.
    *
    *   - `log`: Sometimes it is desirable to test that an error is thrown, for this case the `log`
-   *            mode stores an array of errors in `$exceptionHandler.errors`, to allow later
-   *            assertion of them. See {@link ngMock.$log#assertEmpty assertEmpty()} and
-   *            {@link ngMock.$log#reset reset()}
+   *     mode stores an array of errors in `$exceptionHandler.errors`, to allow later assertion of
+   *     them. See {@link ngMock.$log#assertEmpty assertEmpty()} and
+   *     {@link ngMock.$log#reset reset()}.
    *   - `rethrow`: If any errors are passed to the handler in tests, it typically means that there
-   *                is a bug in the application or test, so this mock will make these tests fail.
-   *                For any implementations that expect exceptions to be thrown, the `rethrow` mode
-   *                will also maintain a log of thrown errors.
+   *     is a bug in the application or test, so this mock will make these tests fail. For any
+   *     implementations that expect exceptions to be thrown, the `rethrow` mode will also maintain
+   *     a log of thrown errors in `$exceptionHandler.errors`.
    */
   this.mode = function(mode) {