docs: remove <details> around examples

The hidden bits are small and don't really need to be hidden.

README.md

@@ -130,22 +130,14 @@ _: {
 
 2. Choose your desired flavour with `catppuccin.flavour`
 
-<details>
-<summary>Example</summary>
-
 ```nix
 _: {
   catppuccin.flavour = "mocha";
 }
 ```
 
-</details>
-
 3. Enable for supported programs with `catppucin.enable = true;`
 
-<details>
-<summary>Example</summary>
-
 ```nix
 _: {
   programs.starship = {
@@ -155,8 +147,6 @@ _: {
 }
 ```
 
-</details>
-
 ## 🙋 FAQ
 
 - Q: **"How do I know what programs are supported?"**\