Minor fixes for D client (#113)

Author: kassane

astro.config.mts

@@ -65,6 +65,10 @@ export default defineConfig({
               label: 'LuaJIT client',
               slug: 'clients/luajit',
             },
+            {
+              label: 'D client',
+              slug: 'clients/d',
+            },
           ],
         },
       ],

astro/content/docs/clients/d.md

@@ -20,19 +20,21 @@ Modules hierarchy:
 ```bash
 .
 └── source
-    ├── c
-    │   ├── ada.d # low-level C bindings - @nogc, nothrow, @safe and betterC compatible
-    │   └── wrapper.d # D (mangled) RAII - nothrow, @safe and betterC compatible
-    └── package.d # by default set public wrapper.d in 'import ada_url'
-                  # (for low-level C bindings use 'import c.ada')
+    └── ada
+        ├── c
+        │   ├── ada.d # low-level C bindings - @nogc, nothrow, @safe and betterC compatible
+        │   └── wrapper.d # D (mangled) RAII - @nogc, nothrow, @safe and betterC compatible
+        └── url
+            └── package.d # by default set public wrapper.d in 'import ada.url'
+                          # (for low-level C bindings use 'import ada.c.ada')
 ```
 
 ## Usage
 
 Here is an example illustrating a common usage:
 
 ```d
-import ada_url : AdaUrl, ParseOptions; // @safe, nothrow and betterC compatible
+import ada.url : AdaUrl, ParseOptions; // @safe, nothrow and betterC compatible
 import std.stdio : writeln; // need GC and throw exception
 
 void main() @safe {
@@ -46,6 +48,8 @@ void main() @safe {
 }
 ```
 
+full example: [here](https://github.com/kassane/ada-d/tree/main/example)
+
 ## Resources
 
 - [Source code][source-code]