Replace google closure syntax = with brackets around name

src/ol/style/Circle.js

@@ -25,7 +25,7 @@ import RegularShape from './RegularShape.js';
  */
 class CircleStyle extends RegularShape {
   /**
-   * @param {Options=} opt_options Options.
+   * @param {Options} [opt_options] Options.
    */
   constructor(opt_options) {
     const options = opt_options ? opt_options : {};

src/ol/style/Fill.js

@@ -16,7 +16,7 @@
  */
 class Fill {
   /**
-   * @param {Options=} opt_options Options.
+   * @param {Options} [opt_options] Options.
    */
   constructor(opt_options) {
     const options = opt_options || {};

src/ol/style/Icon.js

@@ -53,7 +53,7 @@ import {getUid} from '../util.js';
  */
 class Icon extends ImageStyle {
   /**
-   * @param {Options=} opt_options Options.
+   * @param {Options} [opt_options] Options.
    */
   constructor(opt_options) {
     const options = opt_options || {};

src/ol/style/Stroke.js

@@ -27,7 +27,7 @@
  */
 class Stroke {
   /**
-   * @param {Options=} opt_options Options.
+   * @param {Options} [opt_options] Options.
    */
   constructor(opt_options) {
     const options = opt_options || {};

src/ol/style/Style.js

@@ -147,7 +147,7 @@ import {assert} from '../asserts.js';
  */
 class Style {
   /**
-   * @param {Options=} opt_options Style options.
+   * @param {Options} [opt_options] Style options.
    */
   constructor(opt_options) {
     const options = opt_options || {};

src/ol/style/Text.js

@@ -50,7 +50,7 @@ const DEFAULT_FILL_COLOR = '#333';
  */
 class Text {
   /**
-   * @param {Options=} opt_options Options.
+   * @param {Options} [opt_options] Options.
    */
   constructor(opt_options) {
     const options = opt_options || {};