Fix typo in SystemInfo_libpci.cpp

Bug: angleproject:6691
Change-Id: I26d4cdc3839b71002c40ff114e5cb43d60ef2e81
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3279232
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

src/gpu_info_util/SystemInfo_libpci.cpp

@@ -29,7 +29,7 @@ struct LibPCI : private angle::NonCopyable
 {
     LibPCI()
     {
-        if (access("/sys/bus/pci/", F_OK) != 0 && access("/sys/bs/pci_express/", F_OK) != 0)
+        if (access("/sys/bus/pci/", F_OK) != 0 && access("/sys/bus/pci_express/", F_OK) != 0)
         {
             return;
         }