docs: Fix typos in debug_printf.cpp

layers/gpu/debug_printf/debug_printf.cpp

@@ -367,7 +367,7 @@ void Validator::AnalyzeAndGenerateMessage(VkCommandBuffer command_buffer, VkQueu
         InternalWarning(queue, loc, message.str().c_str());
     }
 
-    // Only memset what is needed, in case we are only using only a small portion of a large buffer_size.
+    // Only memset what is needed, in case we are only using a small portion of a large buffer_size.
     // At the same time we want to make sure we don't memset past the actual VkBuffer allocation
     uint32_t clear_size =
         sizeof(uint32_t) * (debug_output_buffer[gpuav::kDebugPrintfOutputBufferSize] + gpuav::kDebugPrintfOutputBufferData);