fix: Component.js string arg type for for removeChild (#9070)

Author: dds05

src/js/component.js

@@ -689,8 +689,8 @@ class Component {
    * Remove a child `Component` from this `Component`s list of children. Also removes
    * the child `Component`s element from this `Component`s element.
    *
-   * @param {Component} component
-   *        The child `Component` to remove.
+   * @param {string|Component} component
+   *       The name or instance of a child to remove.
    */
   removeChild(component) {
     if (typeof component === 'string') {