fix(messaging): clarify Sandbox switch for APNS provider

src/routes/console/project-[project]/messaging/providers/settingsFormList.svelte

@@ -120,7 +120,7 @@
         {:else if input.type === 'switch'}
             <InputSwitch label={input.label} id={input.name} bind:value={params[input.name]}>
                 <svelte:fragment slot="description">
-                    {input.description}
+                    <p>{@html input.description}</p>
                 </svelte:fragment>
             </InputSwitch>
         {:else if input.type === 'checkbox'}

src/routes/console/project-[project]/messaging/providers/store.ts

@@ -167,7 +167,8 @@ export const providers: ProvidersMap = {
                         label: 'Sandbox',
                         name: 'sandbox',
                         type: 'switch',
-                        description: 'Use the development APNS server.'
+                        description:
+                            'Enable sandbox mode for testing on apps signed with development provisioning profiles. <a class="link" href="https://appwrite.io/docs/products/messaging/apns#configure-provider" target="_blank" rel="noopener noreferrer">Learn more</a>.'
                     }
                 ]
             }