docs: more concise README.md

README.md

@@ -2,40 +2,36 @@
 
 [![Built with Starlight](https://astro.badg.es/v2/built-with-starlight/tiny.svg)](https://starlight.astro.build)
 
-You can use the [Helix Editor](https://helix-editor.com/) to refactor code efficiently.
+Examples of efficiently refactoring text in the [Helix Editor](https://helix-editor.com/).
 
 ## Contributing
 
 ### Adding new examples
 
-You can add new examples by editing the [`index.mdx`](https://github.com/NikitaRevenco/helix-golf/edit/main/src/content/docs/index.mdx) file.
-
-To add an entry, copy-paste the following template:
+To add an entry, copy-paste the following template into the [`index.mdx`](https://github.com/NikitaRevenco/helix-golf/edit/main/src/content/docs/index.mdx) file:
 
 ````mdx
-#### A descriptive title
+#### A concise title
 
 An optional description.
 
 ##### Before
 
-```js
+```file extension
 input file
 ```
 
 ##### After
 
-```
+```file extension
 output file
 ```
 
 ##### Command
 
 <details>
 
-<summary>
-`insert command here`
-</summary>
+<summary>`insert command here`</summary>
 
 1. Steps taken
 1. To perform the