Fix pipelinestatistics example

Fix compilation error: no matching function for call to
‘vk::Device::getQueryPoolResults<uint64_t>(vk::QueryPool&, int, int,
std::vector<long unsigned int>&, long unsigned int, vk::QueryResultFlagBits) const’

Building and testing vulkan environment:

```
GPU0:
apiVersion         = 1.3.255
driverVersion      = 0.0.1
vendorID           = 0x10005
deviceID           = 0x0000
deviceType         = PHYSICAL_DEVICE_TYPE_CPU
deviceName         = llvmpipe (LLVM 15.0.7, 256 bits)
driverID           = DRIVER_ID_MESA_LLVMPIPE
driverName         = llvmpipe
driverInfo         = Mesa 23.2.1-1ubuntu3.1~22.04.2 (LLVM 15.0.7)
conformanceVersion = 1.3.1.1
deviceUUID         = 6d657361-3233-2e32-2e31-2d3175627500
driverUUID         = 6c6c766d-7069-7065-5555-494400000000
```

Signed-off-by: Luc Ma <luc@sietium.com>

Author: lucmann

examples/pipelinestatistics/pipelinestatistics.cpp

@@ -124,7 +124,7 @@ class VulkanExample : public vkx::ExampleBase {
     // Retrieves the results of the pipeline statistics query submitted to the command buffer
     void getQueryResults() {
         uint32_t count = static_cast<uint32_t>(pipelineStats.size());
-        device.getQueryPoolResults<uint64_t>(queryPool, 0, 1, pipelineStats, sizeof(uint64_t), vk::QueryResultFlagBits::e64);
+        device.getQueryPoolResults(queryPool, 0, 1, count * sizeof(uint64_t), pipelineStats.data(), sizeof(uint64_t), vk::QueryResultFlagBits::e64);
     }
 
     void updateCommandBufferPreDraw(const vk::CommandBuffer& drawCmdBuffer) override {