Support website links in client list and fix template variable shadowing (#418)

## Overview
This PR is a proposal to add a website link to the client list page to
support linking the new Valkey GLIDE website.

It also fixes a bug in the template file.

## Issue
The client page only display repo links and does not support website
link.

### Adding Website Links

The template now displays a link to the client's website, if one is
provided in the client's data file. This is handled by conditionally
rendering the link only when a non-empty website URL is available.

Here's what the python section looks like:
<img width="1389" height="611" alt="image"
src="https://github.com/user-attachments/assets/12a4ada6-eb60-4254-9002-c1291090abdf"
/>

### Fixes Variable Shadowing

Resolves an issue where a `client` variable was being shadowed within a
loop, which could lead to unpredictable behavior. The shadowing variable
has been renamed to `first_client`.

### Related issues
#416

---------

Signed-off-by: Alex Le <[email protected]>

Author: Aryex

templates/client-list.html

@@ -3,8 +3,8 @@
 
 {% block main_content %}
     {% set client_path = section.extra.recommended_clients_paths | first %}
-    {% set client = load_data(path = docs::client_json_path(client_path=client_path), format="json", required = false) %}
-    {% if not client %}
+    {% set first_client = load_data(path = docs::client_json_path(client_path=client_path), format="json", required = false) %}
+    {% if not first_client %}
         <strong>Clients page not found.</strong> You likely need to build the client page. See "Building additional content" in the README.md file.
     {% else %}
         <div class="markdown-content">
@@ -37,6 +37,9 @@ <h2 id="{{ language | slugify }}">{{ docs::format_language(language=language) }}
                             <h3 id="{{ client.name | slugify }}">{{ client.name }}</h3>
                             <ul>
                                 <li><strong>Repo:</strong> <a href="{{ client.repo }}">{{ client.name }}</a></li>
+                                {% if client.website %}
+                                    <li><strong>Website:</strong> <a href="{{ client.website }}">{{ client.website }}</a></li>
+                                {% endif %} 
                                 <li>
                                     <strong>Installation:</strong>
                                     {% if client.installation is iterable %}