[core] swagger ping

src/api/ping.controller.ts

@@ -7,7 +7,10 @@ import { PingResponse } from '@waha/structures/ping.dto';
 @ApiTags('🔍 Observability')
 export class PingController {
   @Get()
-  @ApiOperation({ summary: 'Ping the server, perform no operations.' })
+  @ApiOperation({
+    summary: 'Ping the server',
+    description: 'Check if the server is alive and responding to requests.',
+  })
   ping(): PingResponse {
     return { message: 'pong' };
   }