Example added on how to overwrite a knockoutjs html file

src/guides/v2.3/javascript-dev-guide/javascript/requirejs.md

@@ -62,6 +62,28 @@ paths: {
 }
 ```
 
+Let us consider an example of overwriting an HTML file in the adminhtml.
+In this example, the max-length value of the text-box in the adminhtml is altered. The HTML file is at `vendor/magento/module_ui/view/base/web/templates/form/element/input.html`
+
+-Create a requirejs-config.js file under `app/code/<Vendor_Name>/<Module_Name>/view/base/`
+
+```javascript
+var config = {
+    paths: {
+        'ui/template/form/element/input': '<vendor_name>_<module_name>/template/form/element/input'
+    }
+};
+```
+
+-Create an `input.html` file under `app/code/<Vendor_Name>/<Module_Name>/view/base/web/template/form/` and copy the contents of the input.html file from the `module_ui` template file.
+
+{:.bs-callout-info}
+The path for `Magento_Ui/templates` is set to be `ui/template` in the requirejs-config.js module of `module_ui`, hence `ui/template` is used for specifying the path. If no paths are set, `<module_name>/templates` should be used.
+
+-Change the maxlength value to be `512` which was originally set to be `256`.
+-Run the Magento setup upgrade and setup compile commands.
+-Notice the modification by inspecting the element source code and having a look at the `maxlength` value which is changed to 512 as specified in the template.
+
 ### deps {#requirejs-config-deps}
 
 The `deps` configuration is used to add a dependency. It can either be used directly under `var config = {}` or under a [shim configuration](#requirejs-config-shim). Adding modules under an independent `deps` configuration will load the specified modules in all pages.