cleanup (#2545)

spelling: treshold -> threshold

src/bgfx_p.h

@@ -1415,10 +1415,10 @@ namespace bgfx
 			BX_FREE(g_allocator, _uniformBuffer);
 		}
 
-		static void update(UniformBuffer** _uniformBuffer, uint32_t _treshold = 64<<10, uint32_t _grow = 1<<20)
+		static void update(UniformBuffer** _uniformBuffer, uint32_t _threshold = 64<<10, uint32_t _grow = 1<<20)
 		{
 			UniformBuffer* uniformBuffer = *_uniformBuffer;
-			if (_treshold >= uniformBuffer->m_size - uniformBuffer->m_pos)
+			if (_threshold >= uniformBuffer->m_size - uniformBuffer->m_pos)
 			{
 				const uint32_t structSize = sizeof(UniformBuffer)-sizeof(UniformBuffer::m_buffer);
 				uint32_t size = bx::alignUp(uniformBuffer->m_size + _grow, 16);